2025 Edexcel IGCSE Economics Practice Paper with Answers

A shift of the demand curve to the left indicates a decrease in demand at all price levels. A fall in consumer incomes (option d) will reduce the demand for normal goods such as leather shoes, causing the demand curve to shift to the left. Option a would shift the supply curve to the left due to higher production costs. Options b and c would both increase the demand for leather shoes, shifting the demand curve to the right.

1 mark for the correct option (D). No other marks are allocated for multiple-choice questions.

First, calculate the percentage change in quantity demanded: \(\frac{850 - 1000}{1000} \times 100 = -15\%\). Next, calculate the percentage change in price: \(\frac{220 - 200}{200} \times 100 = +10\%\). Now, use the PED formula: \(PED = \frac{\% \text{ change in quantity demanded}}{\% \text{ change in price}} = \frac{-15\%}{10\%} = -1.5\). Since the absolute value is greater than 1, demand is price elastic.

1 mark for the correct option (A). No other marks are allocated for multiple-choice questions.

Total cost is calculated using the formula: \(\text{Total Cost (TC)} = \text{Total Fixed Cost (TFC)} + \text{Total Variable Cost (TVC)}\). Here, \(TFC = £1,200\). \(TVC = \text{variable cost per unit} \times \text{quantity} = £2.50 \times 500 = £1,250\). Therefore, \(TC = £1,200 + £1,250 = £2,450\).

1 mark for the correct option (C). No other marks are allocated for multiple-choice questions.

An external cost is a negative impact experienced by a third party who is not involved in the consumption or production decision. Increased healthcare costs paid by taxpayers (option b) to treat dental issues and obesity-related diseases represent a clear external cost on society, rather than a private cost paid directly by the consumer.

1 mark for the correct option (B). No other marks are allocated for multiple-choice questions.

Division of labour involves dividing a production process into separate, simplified tasks. For workers, focusing on a single task repeatedly throughout the working day often leads to boredom, monotony, and an increased risk of repetitive strain injuries (RSI).

1 mark for the correct option (B). No other marks are allocated for multiple-choice questions.

Opportunity cost represents the potential benefits an individual, investor, or business misses out on when choosing one alternative over another. Because resources are scarce, choosing one option means giving up the next best alternative.

Award 1 mark for identifying that it is the next best alternative. Award 1 mark for stating that this alternative is foregone, sacrificed, or given up.

Price elasticity of demand (PED) measures how sensitive the quantity demanded of a product is to a change in its price. It is calculated by dividing the percentage change in quantity demanded by the percentage change in price.

Award 1 mark for referring to the responsiveness of quantity demanded. Award 1 mark for referring to the change in price of the good. Accept a correct mathematical formula for full marks.

Division of labour occurs when a production process is broken down into a sequence of small, specialized tasks, with individual workers or groups assigned to perform only one of these specific tasks to increase overall efficiency.

Award 1 mark for identifying the breaking down of a production process into specific, specialized tasks. Award 1 mark for stating that different tasks are allocated to different workers or groups of workers.

External costs, or negative externalities, occur when the production or consumption of a good or service imposes costs on unrelated third parties. A common example is pollution from a factory that harms the health of local residents.

Award 1 mark for identifying that they are negative impacts, disadvantages, or costs of production or consumption. Award 1 mark for identifying that these costs affect third parties who are outside the economic transaction.

Fixed costs are expenses that a firm must pay regardless of how much output it produces. Even if production is zero, these costs remain constant in the short run. Examples include rent, administrative salaries, and business rates.

Award 1 mark for stating that these costs do not change or vary with output. Award 1 mark for stating that they must be paid in the short run even if output is zero, or for providing a correct example such as rent.

To calculate the Price Elasticity of Demand (PED):

1. Calculate the percentage change in quantity demanded:
\(\frac{6,400 - 8,000}{8,000} \times 100 = -20\%\)

2. Calculate the percentage change in price:
\(\frac{46 - 40}{40} \times 100 = 15\%\)

3. Calculate PED:
\(\text{PED} = \frac{-20\%}{15\%} = -1.33\) (or \(1.33\))

1 mark for showing correct working of percentage changes in quantity demanded and price:
\(\text{Percentage change in quantity demanded} = -20\%\)
\(\text{Percentage change in price} = 15\%\)

1 mark for the correct calculation of PED:
\(-1.33\) (accept \(1.33\) or \(-1\frac{1}{3}\))

To calculate total profit:

1. Calculate Total Revenue (TR):
\(\text{TR} = 1,500 \times £1.20 = £1,800\)

2. Calculate Total Variable Cost (TVC):
\(\text{TVC} = 1,500 \times £0.40 = £600\)

3. Calculate Total Cost (TC):
\(\text{TC} = \text{Total Fixed Cost} + \text{Total Variable Cost} = £600 + £600 = £1,200\)

4. Calculate Total Profit:
\(\text{Total Profit} = \text{TR} - \text{TC} = £1,800 - £1,200 = £600\)

Alternatively:
\(\text{Profit per unit} = \text{Price} - \text{Average Total Cost} = £1.20 - (\frac{£600}{1,500} + £0.40) = £1.20 - (£0.40 + £0.40) = £0.40\)
\(\text{Total Profit} = 1,500 \times £0.40 = £600\)

1 mark for correct method of calculating total revenue and total costs, or profit per unit:
\(\text{Total Revenue} = £1,800\) and \(\text{Total Cost} = £1,200\)
OR
\(\text{Profit per unit} = £0.40\)

1 mark for correct total profit:
\(£600\) (Accept \(600\))

To calculate the labour productivity per worker-hour:

1. Calculate total labor hours:
\(5 \text{ workers} \times 30 \text{ hours} = 150 \text{ worker-hours}\)

2. Calculate labour productivity:
\(\text{Labour Productivity} = \frac{\text{Total Output}}{\text{Total Worker-hours}} = \frac{450}{150} = 3 \text{ vases per worker-hour}\)

1 mark for correct calculation of total worker-hours:
\(150 \text{ hours}\)

1 mark for correct labour productivity:
\(3\) (Accept "3 vases per worker-hour" or "3 vases")

An increase in the cost of cocoa beans increases the costs of production for chocolate manufacturers. This causes the supply curve to shift to the left from \(S_1\) to \(S_2\). At the original price \(P_1\), there is now excess demand, which forces the price up to the new equilibrium price \(P_2\). As price rises, quantity demanded falls, leading to a lower equilibrium quantity of \(Q_2\).

1 mark for a correct leftward shift of the supply curve (labeled \(S_2\)). 1 mark for showing the new, higher equilibrium price (\(P_2\)) corresponding to the intersection of the original demand curve and the new supply curve. 1 mark for showing the new, lower equilibrium quantity (\(Q_2\)) corresponding to the intersection of the original demand curve and the new supply curve.

A maximum price is a price ceiling set by the government above which landlords cannot legally charge. To be effective, this must be set below the free-market equilibrium price \(P_e\). At this lower price \(P_{max}\), landlords are less willing to supply housing, causing quantity supplied to fall to \(Q_s\). At the same time, consumers demand more housing at the lower price, causing quantity demanded to rise to \(Q_d\). This results in excess demand (housing shortage) represented by the distance between \(Q_s\) and \(Q_d\).

1 mark for drawing a horizontal line representing the maximum price (\(P_{max}\)) below the equilibrium price (\(P_e\)). 1 mark for correctly labeling the quantity supplied (\(Q_s\)) at the intersection of \(P_{max}\) and the supply curve. 1 mark for correctly labeling the quantity demanded (\(Q_d\)) at the intersection of \(P_{max}\) and the demand curve.

One reason why the price elasticity of demand (PED) for a product might be inelastic is that the product has very few or no close substitutes (1 mark). This means that if the price of the product increases, consumers have limited alternative options to switch to (1 mark). As a result, the percentage change in quantity demanded will be less than the percentage change in price, which means demand is inelastic where \( \text{PED} < 1 \) (1 mark).

1 mark for identifying a valid reason (e.g. lack of close substitutes, the good is a necessity, the good is addictive, or it represents a small proportion of income).
1 mark for explaining the reason in relation to consumer behaviour (e.g. consumers cannot easily switch to alternatives when price increases).
1 mark for linking this to price elasticity (e.g. quantity demanded changes by a smaller percentage than the price change).

One benefit to a firm of using the division of labour is increased productivity (1 mark). By dividing the production process into separate, smaller tasks, workers can focus on and specialise in a single task (1 mark). Over time, they become faster and highly skilled at this specific task, which increases the total output per worker and reduces average costs for the firm (1 mark).

1 mark for identifying a valid benefit (e.g. increased productivity, lower unit/average costs, time saved as workers do not switch tasks, ease of training workers).
1 mark for explaining how division of labour leads to this benefit (e.g. workers specialise and repeat a single task, becoming highly proficient).
1 mark for linking this to a business outcome (e.g. leading to increased total output, improved profit margins, or reduced resource wastage).

An increase in the national minimum wage acts as a price floor set above the equilibrium wage rate in the labour market. In Solaria's hospitality sector, which relies heavily on low-skilled labor, this 12% wage increase directly impacts both employers and workers. First, regarding labour supply, the higher wage rate increases the opportunity cost of leisure, making work more attractive. This leads to an increase in the quantity of low-skilled labour supplied as more individuals are willing to work in hospitality jobs. Second, regarding labour demand, for hospitality businesses, wages are a major variable cost. A 12% rise in wages increases their costs of production. To maintain profit margins, employers are likely to reduce the quantity of labour demanded by cutting worker hours, freezing recruitment, or substituting labour with capital, such as automated ordering systems. Consequently, the increase in the minimum wage creates a disequilibrium in the labour market where the quantity of labour supplied exceeds the quantity of labour demanded, potentially leading to real-wage unemployment among low-skilled hospitality workers in Solaria.

Mark scheme (6 marks in total) -- AO1 (Knowledge and understanding) - 2 marks: 1 mark for defining or explaining the concept of a minimum wage (e.g., a legally binding minimum price floor for labour set above the market equilibrium). 1 mark for identifying the basic theoretical effect on the labour market (e.g., it can create an excess supply of labour or increase production costs for firms). -- AO2 (Application) - 2 marks: 1 mark for applying the concept to Solaria's context (e.g., low-skilled workers in the hospitality or retail sectors). 1 mark for applying the specific magnitude or context (e.g., the 12% wage increase in response to inflation, affecting hospitality businesses' operating costs). -- AO3 (Analysis) - 2 marks: 1 mark for analysing how the minimum wage leads to an increase in the quantity of labour supplied (more workers attracted to the higher wage). 1 mark for analysing how firms respond by decreasing the quantity of labour demanded (e.g., cutting hours or substituting workers with capital to protect profit margins), resulting in excess supply or unemployment.

Price Elasticity of Demand (PED) measures the responsiveness of the quantity demanded of a good to a change in its price. When the absolute value of PED is less than 1, demand is price inelastic. In Metroville, the PED for bus travel is -0.4, which means it is price inelastic. This is because commuters have few alternative transport options and do not own cars, making bus travel a necessity. Since demand is price inelastic, the percentage change in quantity demanded will be less than the percentage change in price. A 15% increase in bus fares will lead to a 6% decrease in the quantity of bus journeys demanded (calculated as \(15\% \times 0.4 = 6\%\)). Because the percentage increase in price (15%) is greater than the percentage decrease in quantity demanded (6%), the gain in revenue from the higher fare per passenger outweighs the loss in revenue from fewer passengers. Therefore, the 15% fare increase will lead to an overall increase in the total revenue of the Metroville transit authority.

Mark scheme (6 marks in total) -- AO1 (Knowledge and understanding) - 2 marks: 1 mark for defining Price Elasticity of Demand (PED) or inelastic demand (where percentage change in quantity demanded is less than percentage change in price). 1 mark for explaining the relationship between price changes and total revenue for an inelastic good (an increase in price leads to an increase in total revenue). -- AO2 (Application) - 2 marks: 1 mark for applying the PED value of -0.4 to show that demand is inelastic for Metroville bus journeys. 1 mark for explaining the real-world context of inelastic demand in Metroville (e.g., lack of car ownership or alternative transport options makes bus travel a necessity). -- AO3 (Analysis) - 2 marks: 1 mark for calculating or analysing the quantitative impact (e.g., showing that a 15% price rise leads to a smaller 6% drop in quantity demanded). 1 mark for explaining the net outcome: because the price increase proportionately outweighs the fall in passenger numbers, total revenue for the transit authority will rise.

The consumption of sugary soft drinks in Novaland generates negative externalities of consumption. The private market equilibrium leads to overconsumption because consumers only consider their private benefits and ignore the external costs imposed on third parties, such as increased healthcare costs funded by taxpayers. An indirect tax on manufacturers increases their costs of production. This causes the supply curve for sugary drinks to shift to the left, which increases the market price of these drinks and reduces the quantity demanded and consumed. By raising the price, the tax 'internalises the externality' by making consumers and producers pay for the external costs they impose on society. As consumption decreases, the market moves closer to the socially optimum level of output where Marginal Social Benefit (MSB) equals Marginal Social Cost (MSC). This reduces the prevalence of obesity and lessens the burden on Novaland's national health service, thereby correcting the market failure.

Mark scheme (6 marks in total) -- AO1 (Knowledge and understanding) - 2 marks: 1 mark for defining/explaining a negative externality of consumption (costs imposed on third parties outside of the market transaction) or market failure. 1 mark for explaining how an indirect tax works (a tax on spending that increases costs of production for firms). -- AO2 (Application) - 2 marks: 1 mark for applying the negative externality to Novaland's context (e.g., sugary drinks causing obesity and rising healthcare costs for the national health service). 1 mark for applying the tax mechanism to Novaland (e.g., tax shifts supply of sugary drinks, raising their price). -- AO3 (Analysis) - 2 marks: 1 mark for analysing the transmission mechanism: the tax increases costs, shifting supply left, which increases market price and reduces quantity demanded/consumed. 1 mark for linking the reduction in consumption to the correction of market failure (e.g., internalising the externality, bringing the market closer to the social optimum, and reducing pressure on the healthcare system).

Introduction: A tax on single-use plastic packaging is an indirect tax aimed at internalising negative externalities (such as environmental pollution and harm to marine life). Arguments for effectiveness: First, it increases production costs, shifting the supply curve of plastic packaging leftwards. This increases the market price and reduces the equilibrium quantity produced and consumed toward the socially optimum level. Second, the higher costs encourage firms to develop and switch to eco-friendly, biodegradable alternatives. Third, the tax revenue can be ring-fenced by the government to fund recycling schemes or environmental cleanup. Arguments against effectiveness: First, if consumers or firms have a high dependency on plastic and few cheap alternatives exist, demand is price inelastic, meaning producers can pass the tax burden to consumers with little change in quantity. Second, it is extremely difficult for governments to put a precise monetary value on the environmental damage, leading to the risk of setting the tax too high or too low. Third, the tax has a regressive impact, disproportionately affecting low-income households. Conclusion: The tax is likely to reduce plastic waste in the long run if viable substitutes are available, but its success depends on how the revenue is spent and whether it is paired with complementary measures like subsidies for green alternatives.

Level 1 (1-3 marks): Demonstrates basic knowledge of indirect taxes and negative externalities. Simple statements showing how a tax increases costs or reduces quantity without detailed development. Level 2 (4-6 marks): Explains the mechanism of the tax in shifting supply and raising prices to reduce market failure, applying this to plastic waste. Points are analysed but may lack balance or deep evaluation of limitations. Level 3 (7-9 marks): Evaluates the effectiveness of the tax with a balanced argument, considering both strengths and key limitations (such as inelastic demand, valuation problems, and regressive effects). Offers a reasoned and supported concluding judgment.

Introduction: A national minimum wage (NMW) is a legally binding price floor below which employers cannot pay workers. Low-skilled industries, such as retail and hospitality, are highly affected by NMW changes. Arguments that employment will decrease: A 15% increase is substantial and sharply raises a firm's variable costs. If the NMW is set above the equilibrium market wage, it creates an excess supply of labour (unemployment) as the quantity of labour demanded contracts. Firms may seek to reduce labour costs by replacing low-skilled workers with capital, such as self-service checkouts. Small firms with tight profit margins may also face closure, leading to job losses. Arguments that employment may not decrease: Higher wages can boost worker morale, reducing absenteeism and increasing productivity, which offsets the costs. A higher NMW also reduces staff turnover, saving recruitment costs. Furthermore, low-income workers have a high marginal propensity to consume; their increased spending boosts aggregate demand, which increases the derived demand for labour. Conclusion: The impact on employment depends heavily on the price elasticity of demand for labour and whether automation is easy to adopt. While a large 15% increase may cause short-term transitional unemployment, productivity gains and higher consumer spending can mitigate these effects in the long run.

Level 1 (1-3 marks): Basic understanding of a national minimum wage. Simple assertions that higher wages lead to unemployment or help workers, with little economic analysis. Level 2 (4-6 marks): Clear explanation of how a minimum wage above equilibrium creates a surplus of labour (unemployment) using economic reasoning, and mentions opposing factors like productivity or consumption. Focuses on low-skilled industries. Level 3 (7-9 marks): Balanced assessment of both side effects (unemployment risk vs productivity/demand gains) in low-skilled industries. Analyzes key determining factors such as the size of the increase, labour elasticity, and time lags, leading to a logical and justified conclusion.

An increase in the national minimum wage represents a government-mandated price floor set above the equilibrium wage rate in the market for low-skilled labour.

**Arguments for a positive impact (benefits):**
- **Higher Standard of Living:** Low-skilled workers who retain their jobs receive higher wages, reducing relative poverty and increasing disposable income.
- **Work Incentives (Incentive Effect):** A higher minimum wage increases the opportunity cost of leisure, encouraging economically inactive individuals to enter the workforce, thereby increasing the supply of labour.
- **Productivity Gains:** According to efficiency wage theory, higher pay can boost worker morale, reduce staff turnover, and lower recruitment/training costs for businesses, raising overall labour productivity.

**Arguments for a negative impact (drawbacks):**
- **Unemployment (Excess Supply of Labour):** By raising the wage above equilibrium, the demand for labour decreases while the supply of labour increases. This creates a surplus of labour, resulting in classical unemployment.
- **Business Cost Pressures:** Small businesses operating on low margins may struggle to absorb higher wage costs, potentially leading to closures or reduced investment.
- **Capital Substitution:** Firms may look to replace increasingly expensive low-skilled workers with capital (automation), such as self-service checkouts in supermarkets.

**Evaluation / Judgment:**
The final impact of an increase in the national minimum wage depends on several critical factors:
- **Elasticity of Demand for Labour:** If the demand for labour is highly inelastic (e.g., in essential services where workers cannot easily be automated), employment will fall very little. If demand is elastic, employment losses will be more severe.
- **Magnitude of the Increase:** A small, gradual increase is easily absorbed by firms, whereas a sudden, large increase is more likely to cause sudden job losses.
- **Economic Climate:** During a boom, businesses can easily pass on higher wage costs to consumers as higher prices without losing demand, whereas in a recession, this could force bankruptcies.

Level 1 (1-3 marks):
- Demonstrates isolated knowledge of the minimum wage and labour market.
- Lacks structure, economic terms are used inaccurately, and there is no analysis.

Level 2 (4-6 marks):
- Shows basic understanding of how a minimum wage affects the market, perhaps mentioning higher wages or job losses.
- Provides limited analysis, but lacks detail on both sides of the argument.

Level 3 (7-9 marks):
- Demonstrates good economic knowledge of the labour market.
- Offers a balanced analysis of both positive impacts (improved living standards, productivity) and negative impacts (unemployment, cost pressures).
- Includes a basic attempt at evaluation, but lacks depth.

Level 4 (10-12 marks):
- Demonstrates precise and comprehensive understanding of the labour market.
- Offers a highly detailed, logical analysis of both sides of the argument.
- Provides a robust, nuanced evaluation/judgment considering factors such as the elasticity of demand for labour, the size of the wage increase, and the state of the wider economy.

An increase in interest rates makes saving in the country more attractive to foreign investors, leading to 'hot money' inflows. This increases the demand for the currency, causing it to appreciate. At the same time, higher interest rates increase the cost of borrowing for firms, which discourages investment. Therefore, the exchange rate appreciates and investment decreases.

Award 1 mark for the correct option B. Award 0 marks for any other option.

Structural unemployment occurs when there is a mismatch between the skills of the unemployed workforce and the skills required for available jobs. This is often caused by structural changes in the economy, such as the decline of traditional manufacturing industries.

Award 1 mark for the correct option C. Award 0 marks for any other option.

A depreciation of the currency makes exports cheaper for foreign buyers, leading to an increase in the volume of exports. Conversely, it makes imports more expensive for domestic buyers, leading to a decrease in the volume of imports. (SPICED: Strong Pound Imports Cheaper Exports Dearer, so a weak currency has the opposite effect).

Award 1 mark for the correct option C. Award 0 marks for any other option.

Repatriation of profits occurs when MNCs send the profits they make in the host country back to their headquarters in their home country. This represents a leakage from the host country's economy and is a major potential disadvantage. Options B, C, and D are typical advantages of MNC investment.

Award 1 mark for the correct option A. Award 0 marks for any other option.

Expansionary fiscal policy (e.g., cutting income tax or increasing government spending) increases consumer disposable income and overall demand. As consumer incomes rise, spending on imported goods and services typically increases, which will increase the current account deficit (or reduce a surplus).

Award 1 mark for the correct option B. Award 0 marks for any other option.

Monetary policy is a demand-management policy used by the central bank of a country. It involves manipulating monetary instruments, primarily interest rates, but also the money supply and quantitative easing, to control inflation and influence economic activity.

Award 1.4 marks for a complete definition that mentions both the agent (central bank/monetary authority) and the tools used (interest rates/money supply) to influence the economy. Award partial credit of 0.7 marks if only tools or only objectives are mentioned.

The current account of the balance of payments records trade in goods and services, primary income, and secondary income. A deficit means that the total debit value (outflow of money) exceeds the total credit value (inflow of money) in these categories.

Award 1.4 marks for a complete definition highlighting that imports/outflows of money on the current account exceed exports/inflows of money. Award 0.7 marks for an incomplete definition, such as 'imports are greater than exports' without reference to value or the current account.

By spending on infrastructure like roads, railways, and broadband, the government improves the efficiency of transport and communications. This lowers business costs, increases productivity, and shifts the aggregate supply curve to the right, fostering long-term economic growth.

Award 1.4 marks for any valid state/reason, such as: improving productive capacity, boosting short-term aggregate demand, reducing unemployment, or attracting foreign direct investment (FDI).

An exchange rate determines how much of one currency is needed to purchase a unit of another currency. For example, if 1 GBP = 1.30 USD, the exchange rate of the pound in terms of dollars is 1.30.

Award 1.4 marks for a clear definition stating that it is the price/value of one currency in terms of another currency. Do not award marks if it only refers to changing money.

Globalisation involves the expansion of international trade, the free movement of capital and labour, and the spread of technology and multinational corporations (MNCs), making global economies more interconnected.

Award 1.4 marks for a definition highlighting the integration or interdependence of world economies/markets. Award 0.7 marks for a partial definition focusing only on trade or free movement without general integration.

To find the price of the machinery in US Dollars ($), multiply the price in pounds (£) by the exchange rate:

\(\text{Price in USD} = 18,500 \times 1.24 = 22,940\)

The price of the machinery in US Dollars is $22,940.

• 1 mark for showing correct working: e.g. \(18,500 \times 1.24\)
• 1 mark for the correct answer: $22,940 (accept 22,940 or 22940)

To find the inflation rate, calculate the percentage change in the CPI from 2022 to 2023:

\(\text{Inflation Rate} = \frac{\text{CPI in 2023} - \text{CPI in 2022}}{\text{CPI in 2022}} \times 100\)

\(\text{Inflation Rate} = \frac{117.0 - 112.5}{112.5} \times 100\)

\(\text{Inflation Rate} = \frac{4.5}{112.5} \times 100 = 4\%\)

The inflation rate is 4%.

• 1 mark for showing correct working: e.g. \(\frac{117 - 112.5}{112.5} \times 100\) or \(\frac{4.5}{112.5}\)
• 1 mark for the correct answer: 4% (accept 4)

First, calculate the balance of trade in goods:
\(\text{Trade in Goods Balance} = \text{Exports of Goods} - \text{Imports of Goods} = 64\text{bn} - 72\text{bn} = -\$8\text{bn}\)

Second, calculate the balance of trade in services:
\(\text{Trade in Services Balance} = \text{Exports of Services} - \text{Imports of Services} = 28\text{bn} - 19\text{bn} = +\$9\text{bn}\)

Now, add both balances together to find the overall balance of trade:
\(\text{Overall Balance} = -\$8\text{bn} + \$9\text{bn} = +\$1\text{bn}\)

Alternatively, sum all exports and subtract all imports:
\(\text{Total Exports} = 64\text{bn} + 28\text{bn} = 92\text{bn}\)
\(\text{Total Imports} = 72\text{bn} + 19\text{bn} = 91\text{bn}\)
\(\text{Overall Balance} = 92\text{bn} - 91\text{bn} = \$1\text{bn}\)

The overall balance of trade is a surplus of $1 billion.

• 1 mark for showing correct working: e.g. \((64 + 28) - (72 + 19)\) or \(-8\text{bn} + 9\text{bn}\)
• 1 mark for the correct answer: $1bn (accept surplus of $1bn, 1 billion, 1bn, or 1)

To show the effect of a decrease in demand for the Mexican Peso:
1. Draw a new demand curve to the left of the original demand curve \(D_1\) and label it \(D_2\).
2. Identify the new intersection point between the original supply curve \(S_1\) and the new demand curve \(D_2\).
3. From this new intersection, draw a horizontal dotted line to the vertical axis (Exchange rate in USD) and label it \(ER_2\).
4. Draw a vertical dotted line from the new intersection to the horizontal axis (Quantity of Pesos) and label it \(Q_2\).

Award 1 mark for each of the following up to a maximum of 3 marks:
- 1 mark for a correctly drawn parallel leftward shift of the demand curve, labeled \(D_2\).
- 1 mark for correctly identifying and labeling the new lower equilibrium exchange rate \(ER_2\) on the vertical axis.
- 1 mark for correctly identifying and labeling the new lower equilibrium quantity \(Q_2\) on the horizontal axis.

To show the long-run impact of the supply-side policy:
1. Draw a vertical line to the right of the original \(LRAS_1\) curve and label it \(LRAS_2\).
2. Identify the new intersection point between the Aggregate Demand curve (AD) and the new \(LRAS_2\) curve.
3. Draw a horizontal dotted line from this new intersection point to the vertical axis (Price Level) and label it \(PL_2\).
4. Draw a vertical dotted line from the new intersection point to the horizontal axis (Real Output) and label it \(Y_2\).

Award 1 mark for each of the following up to a maximum of 3 marks:
- 1 mark for a correctly drawn shift of the LRAS curve to the right, labeled \(LRAS_2\).
- 1 mark for showing the new, lower equilibrium price level \(PL_2\) on the vertical axis.
- 1 mark for showing the new, higher equilibrium real output \(Y_2\) on the horizontal axis.

To illustrate the effects of the tariff:
1. Draw a horizontal line above the original world price line \(P_W\) and label it \(P_W + t\).
2. Locate where this new price line intersects the domestic supply curve (S). Draw a vertical line down to the horizontal axis (Quantity) and label it \(Q_s\). This represents the increased domestic production.
3. Locate where this new price line intersects the domestic demand curve (D). Draw a vertical line down to the horizontal axis (Quantity) and label it \(Q_d\). This represents the decreased domestic consumption.

Award 1 mark for each of the following up to a maximum of 3 marks:
- 1 mark for a correctly positioned horizontal line above \(P_W\), labeled \(P_W + t\).
- 1 mark for correctly identifying and labeling the new domestic quantity supplied \(Q_s\) on the horizontal axis.
- 1 mark for correctly identifying and labeling the new domestic quantity demanded \(Q_d\) on the horizontal axis.

A government might devalue its currency to make its exports more price-competitive abroad (1 mark). This is because foreign buyers need less of their own currency to buy the devalued currency, reducing export prices (1 mark). Consequently, the volume of exports increases while imports decrease, improving the balance of payments on the current account (1 mark).

1 mark for identifying a valid reason, e.g. to improve competitiveness / trade balance. 1 mark for explaining how devaluation affects prices of exports or imports. 1 mark for explaining the impact on export/import volumes or the current account balance.

High inflation can create uncertainty about future costs and prices (1 mark). This makes it difficult for businesses to predict returns on investment, making capital projects riskier (1 mark). As a result, businesses reduce investment in capital goods, which limits the growth of the country's productive capacity (1 mark).

1 mark for identifying a valid link between inflation and economic growth (e.g., impact on investment, competitiveness). 1 mark for explaining how inflation causes this impact (e.g., causing price uncertainty, making domestic goods more expensive). 1 mark for explaining the outcome on economic growth (e.g., reduced productive capacity, lower demand for domestic goods).

An MNC can create direct employment opportunities when it establishes operations in a host country (1 mark). This means local workers are hired to work in the factories or offices (1 mark). This increases household incomes, leading to higher consumption and overall economic growth in the host country (1 mark).

1 mark for identifying a valid benefit of MNCs to a host country (e.g., employment, technology transfer, tax revenue). 1 mark for explaining how this benefit occurs. 1 mark for linking this benefit to a positive economic outcome for the host country.

A depreciation of the Zamland currency (ZML) makes Zamland's exports, such as cocoa beans, cheaper for foreign buyers in terms of foreign currency. This increases the international competitiveness of cocoa exports, likely raising the quantity demanded. If the demand for cocoa beans is price elastic, total export revenue in terms of ZML will increase.

On the other hand, the depreciation makes imports, such as machinery and fuel, more expensive for domestic buyers in terms of ZML. Because machinery and fuel are essential inputs with highly price inelastic demand, Zamland cannot easily reduce the volume imported. Consequently, the total expenditure on these imports in ZML will rise.

The overall impact on the current account balance depends on whether the increase in export revenue is greater than the increase in import expenditure. If the Marshall-Lerner condition holds (the sum of price elasticities of demand for exports and imports is greater than 1), the current account balance will improve in the medium to long term. However, due to the inelastic nature of fuel and machinery imports, the current account deficit may initially widen in the short term.

Award up to 6 marks for detailed analysis of the impact of currency depreciation on the current account balance in context.

Level 1 (1-2 marks): Demonstrates limited economic knowledge and understanding. Identifies basic effects of depreciation (e.g., exports cheaper, imports more expensive) but with little or no application to Zamland's cocoa or machinery/fuel imports. Reasoning is weak and lacks structure.

Level 2 (3-4 marks): Demonstrates partial economic knowledge and understanding. Applies analysis to Zamland by explaining how cheap cocoa exports and expensive machinery/fuel imports affect trade values. There is a clear chain of reasoning, but some links may be incomplete (e.g., failing to link to the overall current account balance).

Level 3 (5-6 marks): Demonstrates robust economic knowledge and understanding. Offers a detailed, logical, and contextualised chain of reasoning. Clearly explains how the 15% depreciation impacts export revenues (via cocoa) and import expenditures (via essential machinery/fuel), and draws a clear conclusion on the net impact on the current account balance, incorporating elasticity or short-term/long-term effects.

Government spending on infrastructure projects like broadband and railways represents an increase in government expenditure (\(G\)), which is a component of aggregate demand (\(AD = C + I + G + [X - M]\)). An increase in \(G\) will directly shift the aggregate demand curve to the right.

Furthermore, these massive infrastructure projects create jobs in construction and engineering, increasing employment and household incomes. This leads to higher consumer spending (\(C\)), causing a secondary increase in aggregate demand.

In the short term, because Ostland is already experiencing high inflation, the economy may be operating close to its full capacity. This rapid expansion of aggregate demand will exceed aggregate supply, leading to increased demand-pull inflation. Consequently, the government's pursuit of economic growth through infrastructure spending directly conflicts with its macroeconomic objective of achieving low and stable inflation.

Award up to 6 marks for detailed analysis of the policy conflict between infrastructure spending and inflation in context.

Level 1 (1-2 marks): Demonstrates limited economic knowledge and understanding. Identifies that government spending causes inflation, but lacks application to Ostland's infrastructure (railways/broadband) or a clear explanation of aggregate demand.

Level 2 (3-4 marks): Demonstrates partial economic knowledge and understanding. Applies analysis to the context of Ostland, explaining that building railways/broadband raises aggregate demand and bids up prices, showing some chains of reasoning.

Level 3 (5-6 marks): Demonstrates robust economic knowledge and understanding. Offers a highly systematic and contextualised analysis. Clearly explains how the increase in \(G\) and subsequent rise in employment/consumer spending (\(C\)) shifts AD to the right. Correctly connects this to demand-pull inflation when the economy is already experiencing high inflation, demonstrating a clear policy conflict in the short term.

An increase in interest rates is a contractionary monetary policy used by central banks to control inflation. When interest rates rise, the cost of borrowing increases for both consumers and firms. This discourages borrowing for consumption (especially on big-ticket items like housing and cars) and investment. At the same time, the reward for saving increases, encouraging households to save rather than spend. Consequently, consumption and investment decrease, leading to a fall or slower growth in aggregate demand (AD). This shift of AD to the left helps reduce demand-pull inflation. Additionally, higher interest rates can attract foreign investment ('hot money'), causing the exchange rate to appreciate, which makes imports cheaper and helps lower imported cost-push inflation. However, there are significant limitations to this policy. First, there is a time lag, often taking 12 to 18 months for interest rate changes to fully affect the economy, meaning inflation may not be controlled quickly. Second, higher interest rates increase costs for existing borrowers on variable rate loans, reducing their disposable income and potentially lowering economic growth too much, which can cause unemployment. Third, if inflation is driven by cost-push factors (such as rising global commodity prices), raising interest rates will do little to solve the root cause and may instead lead to stagflation. In conclusion, while an increase in interest rates is highly effective at curbing demand-pull inflation, its effectiveness is limited by time lags and its negative impacts on wider macroeconomic objectives like economic growth and employment. It is far less effective if the inflation is driven by external cost-push factors.

Level 1 (1-3 marks): Identifies basic knowledge of interest rates and inflation, but lacks detailed explanation. Simple statements with little or no application to the question. Level 2 (4-6 marks): Explains how interest rates affect aggregate demand and inflation. Some application to the context is present. Offers a one-sided argument or a limited two-sided analysis without a clear conclusion. Level 3 (7-9 marks): Provides a balanced and detailed analysis of both the advantages (reducing AD, currency appreciation) and disadvantages (time lags, impact on growth/unemployment, cost-push limitations) of raising interest rates. Evaluative comments are well-supported, leading to a logical and reasoned conclusion.

Multinational corporations (MNCs) locating in a developing country can have profound effects on employment and wages. On the positive side, MNCs create direct employment opportunities by building factories, offices, and infrastructure. This direct job creation helps reduce unemployment and increases household incomes. There is also an indirect employment effect, as local suppliers and service providers expand to meet the needs of the MNC. To attract the best local talent, MNCs often pay higher wages than local domestic firms, which can drive up average wage rates across the economy. Furthermore, MNCs often provide training and skill development, increasing the productivity and long-term earning potential of the local workforce. On the negative side, MNCs are sometimes accused of exploiting cheap labour in developing countries by paying wages that, while higher than local averages, are very low by international standards and accompanied by poor working conditions. Additionally, MNCs may bring their own highly-skilled managers and technical staff from their home countries, leaving only low-skilled, low-paid assembly jobs for the local population. Furthermore, the entry of powerful MNCs can drive local, less competitive businesses out of the market, leading to significant job losses in domestic sectors that may offset the jobs created by the MNC. In conclusion, the impact of MNCs on employment and wages is mixed. It is generally positive in terms of absolute job creation and potential wage increases. However, the extent of these benefits depends heavily on whether the host country's government enforces robust minimum wage laws and labour regulations, and whether domestic firms can successfully integrate into the MNC's supply chain.

Level 1 (1-3 marks): Shows basic understanding of MNCs, employment, or wages. Simple points with no real depth or application. Level 2 (4-6 marks): Explains the positive and/or negative impacts of MNCs on local employment and wages with some economic reasoning. One-sided or lacks balanced evaluation. Level 3 (7-9 marks): Provides a balanced and detailed assessment of both the benefits (job creation, training, wage bidding) and drawbacks (labour exploitation, displacement of local firms, repatriation of skilled jobs) of MNC entry. Evaluative comments are supported by economic theory, culminating in a clear, logical conclusion.

Introduction: Monetary policy, managed by the central bank, involves manipulating monetary variables like interest rates to achieve macroeconomic stability. Raising interest rates is a contractionary monetary policy primarily aimed at reducing high inflation. Arguments that it is effective: 1. Higher interest rates increase the cost of borrowing for households and firms. This discourages spending on credit-sensitive items (like housing and cars) and reduces business investment, shifting Aggregate Demand (AD) to the left, which reduces demand-pull inflationary pressure. 2. Higher rates increase the reward for saving, encouraging households to defer consumption. 3. Exchange rate mechanism: Higher rates attract hot money inflows, appreciating the exchange rate. This makes imports cheaper (reducing import-cost inflation) and exports more expensive, further reducing net exports and AD. Arguments that it is ineffective / has limitations: 1. Time lags: It can take 12 to 18 months for interest rate changes to fully transmit through the economy, making it slow to curb sudden inflation. 2. Cost-push inflation: If inflation is driven by rising global costs (e.g., energy or raw materials), raising interest rates will not address the root cause and may instead lead to stagflation (recession combined with inflation). 3. Trade-offs: Restraining inflation through high interest rates can severely damage economic growth and lead to higher unemployment. 4. Confidence: If consumer and business confidence is exceptionally high, borrowing and spending may continue despite high rates. Conclusion/Judgment: Overall, raising interest rates is a highly effective tool for controlling demand-pull inflation, but its success depends on the cause of the inflation. For cost-push inflation, supply-side policies are more appropriate. Furthermore, policymakers must balance the rate increases to avoid triggering a severe economic recession.

Level 1 (1-3 marks): Identifies basic economic concepts. Gives simple definitions of interest rates or inflation with little or no analysis or evaluation. Level 2 (4-6 marks): Explains how interest rates affect inflation (e.g., higher borrowing costs lead to less spending). Shows some application to macroeconomic objectives but analysis is limited or one-sided. Level 3 (7-9 marks): Provides a balanced explanation of both the benefits (reducing AD, currency appreciation) and limitations (time lags, trade-offs with growth). Economic arguments are structured and use appropriate terminology. Level 4 (10-12 marks): Offers a detailed, balanced, and critical evaluation. Distinguishes between demand-pull and cost-push inflation. Provides a clear, well-supported final judgment on effectiveness based on context, confidence, and policy trade-offs.

Introduction: Raising interest rates is a contractionary monetary policy designed to reduce inflationary pressures by dampening aggregate demand (AD). Effectiveness (Arguments for): 1. Higher cost of borrowing: Discourages consumers from buying big-ticket items on credit and discourages firms from borrowing to finance investment projects, reducing the investment (I) and consumption (C) components of AD. 2. Increased incentive to save: Households prefer to save rather than spend, further dampening consumer demand. 3. Exchange rate appreciation: Higher interest rates attract foreign 'hot money' seeking higher returns, increasing demand for the domestic currency. The resulting appreciation makes imports cheaper, lowering cost-push inflation, and makes exports more expensive, reducing net exports (X-M). Limitations (Arguments against): 1. Ineffective against cost-push inflation: If inflation is caused by external shocks (e.g., rising global oil prices), higher interest rates do not solve the supply-side issue and may cause stagflation. 2. Time lags: Monetary policy changes can take up to 18 months to fully affect the real economy. 3. Impact on growth and employment: By slowing down economic activity, higher interest rates can lead to rising unemployment and lower GDP growth. 4. Confidence levels: If consumer confidence is extremely high, moderate rate increases may not successfully deter spending. Conclusion: The policy is highly effective for demand-pull inflation but must be used cautiously due to the risk of causing a recession, particularly when inflation is driven by global supply-side factors.

Level 1 [1-3 marks]: Demonstrates isolated knowledge of interest rates or inflation. No clear chain of reasoning. Level 2 [4-6 marks]: Explains the link between interest rates and inflation. Limited evaluation, mostly one-sided. Level 3 [7-9 marks]: Balanced analysis of the advantages and disadvantages of raising interest rates to control inflation. Good economic terminology. Level 4 [10-12 marks]: Detailed, balanced evaluation with a clear and reasoned judgment. Distinguishes between demand-pull and cost-push inflation, and evaluates the role of confidence and time lags.