2022 Edexcel A-Level Economics B (9EB0) 模擬試題連答案詳解

Step 1: Calculate the actual output for 2023. Actual output increased by 12% from 98,000: \(98,000 \times 1.12 = 109,760\) mugs. Step 2: State the capacity utilisation formula: \(\text{Capacity Utilisation} = \frac{\text{Actual Output}}{\text{Maximum Capacity}} \times 100\). Step 3: Substitute the figures into the formula: \(\frac{109,760}{140,000} \times 100 = 78.4\%\).

1 mark for calculating the new actual output for 2023 (109,760 mugs). 1 mark for stating the correct capacity utilisation formula. 1 mark for correct substitution of figures: \(\frac{109,760}{140,000} \times 100\). 1 mark for the correct final answer of 78.4% (accept 78.4). Award 4 marks for the correct final answer of 78.4% even if no working is shown.

Step 1: Calculate the April price in USD: \(£1,200 \times 1.40 = \$1,680\). Step 2: Calculate the October price in USD: \(£1,200 \times 1.25 = \$1,500\). Step 3: Calculate the percentage change in USD price: \(\frac{\$1,500 - \$1,680}{\$1,680} \times 100 = \frac{-\$180}{\$1,680} \times 100 \approx -10.71\%\). Alternative Method: Percentage change in the exchange rate = \(\frac{1.25 - 1.40}{1.40} \times 100 = -10.71\%\).

1 mark for calculating April and October USD prices ($1,680 and $1,500). 1 mark for calculating the absolute change in price (-$180). 1 mark for correctly setting up the percentage change formula: \(\frac{-\$180}{\$1,680} \times 100\). 1 mark for the correct final answer of -10.71% (also accept '10.71% decrease', '10.71% reduction', or -10.71). Award 4 marks for the correct final answer of -10.71% or 10.71% decrease even if no working is shown.

Diagram details: 1. Axis Labels: Price (Y-axis) and Quantity (X-axis). 2. Initial Curves: Downward-sloping demand curve (D1) and upward-sloping supply curve (S1) intersecting at initial equilibrium (P1, Q1). 3. Shift: Supply curve shifts to the left from S1 to S2. 4. New Equilibrium: Intersecting at P2 (higher price) and Q2 (lower quantity). Explanation: An increase in the cost of cocoa beans increases the variable costs of production for chocolate manufacturers. This reduces the profit margin at any given price, causing a decrease in supply, represented by a leftward shift of the supply curve (S1 to S2). As a result, there is excess demand at the original price P1, causing upward pressure on price until a new equilibrium is reached at a higher price (P2) and a lower quantity (Q2).

Marks allocation: 5 marks. Diagram (3 marks): 1 mark for drawing a correctly labeled demand and supply diagram showing original equilibrium (P1, Q1). 1 mark for shifting the supply curve to the left (S2). 1 mark for showing the new, higher equilibrium price (P2) and lower quantity (Q2). Explanation (2 marks): 1 mark for explaining that cocoa beans are a key input, so a rise in their price increases production costs and shifts supply left. 1 mark for explaining how this leads to a higher equilibrium price and lower quantity as the market adjusts. Accept/Reject Notes: Reject diagrams with incorrect axis labels. Accept shift in demand only if a highly specific, justified secondary effect is explained, but the primary mark for the supply shift must be present.

Diagram details: 1. Axis Labels: Wage Rate (Y-axis) and Quantity of Labor / Employment (X-axis). 2. Initial Curves: Downward-sloping demand for labor (DL) and upward-sloping supply of labor (SL) intersecting at initial equilibrium (We, Qe). 3. Policy Line: A horizontal line representing the minimum wage (Wmin) drawn above the equilibrium wage We. 4. Impact Points: The quantity of labor demanded drops to Qd and the quantity of labor supplied rises to Qs. Explanation: A binding minimum wage (Wmin) is set above the market-clearing wage (We). At this higher wage, the cost of employing workers increases, leading to a contraction in demand for labor by firms from Qe to Qd. Thus, actual employment falls to Qd. At the same time, the higher wage rate makes work more attractive, causing an expansion in the supply of labor from Qe to Qs. This creates an excess supply of labor (unemployment) equal to Qs - Qd.

Marks allocation: 5 marks. Diagram (3 marks): 1 mark for drawing a correctly labeled labor market diagram showing equilibrium wage (We) and level of employment (Qe). 1 mark for drawing the minimum wage line (Wmin) above the equilibrium wage. 1 mark for identifying the new levels of labor demanded (Qd) and supplied (Qs), demonstrating the contraction in employment and/or the resulting labor surplus. Explanation (2 marks): 1 mark for explaining that the higher wage increases the cost of labor to employers, causing them to reduce the number of workers they employ (contraction in demand to Qd). 1 mark for explaining that the policy creates a surplus of labor (unemployment) because the quantity of labor supplied (Qs) exceeds the quantity demanded (Qd) at the new wage. Accept/Reject Notes: Do not award full marks if the minimum wage line is drawn below the equilibrium wage, as this would be non-binding. Accept diagrams labeled with 'Price of Labor' and 'Quantity of Labor'.

### Indicative Content

**Arguments that profitability will fall (negative impact):**
- **Cost Increase:** Since labor accounts for 45% of total operating costs at *BiteSize Burgers*, a 9.8% wage increase represents a significant rise in total costs (TC). If total revenue (TR) remains constant, profit margin \(\text{Profit} = \text{TR} - \text{TC}\) will inevitably shrink.
- **Pricing Constraints:** If *BiteSize Burgers* operates in a highly competitive fast-food market, demand may be price elastic. Raising prices to pass on costs could lead to a disproportionately large fall in demand, reducing total revenue and profitability.
- **Wage Ripple Effect:** To maintain wage differentials, supervisors and more experienced staff may also demand wage increases, compounding the cost shock.

**Arguments that profitability might not fall or could improve (mitigating factors / positive impact):**
- **Productivity Gains:** Higher wages can boost employee morale, leading to higher productivity, lower staff turnover, and reduced recruitment and training costs.
- **Capital Substitution:** The firm can invest in self-service digital kiosks. Although this requires upfront capital expenditure, it reduces labor costs in the medium-to-long term, potentially raising profit margins.
- **Income Effect:** A higher NLW increases the disposable income of low-income workers, who have a high marginal propensity to consume. If these workers spend their extra income on fast food, *BiteSize Burgers* may experience an increase in demand and revenue, offsetting the cost increase.

**Conclusion/Evaluation:**
The net impact depends heavily on the price elasticity of demand (PED) for *BiteSize Burgers*' products. If demand is inelastic, they can pass the cost onto consumers without losing significant volume. In the long term, profitability may be preserved or enhanced if the firm successfully transitions to automated kiosks, though short-term profit margins are likely to experience a squeeze.

**Marking Scheme (9 Marks Total)**

| Level | Marks | Descriptor |
|---|---|---|
| **Level 1** | 1–2 | • **Knowledge/Understanding**: Identifies or defines relevant economic concepts, such as National Living Wage, total costs, or profitability.
• **Application**: Basic reference to the context of *BiteSize Burgers* or the hospitality sector. |
| **Level 2** | 3–5 | • **Analysis**: Explains the connection between a wage increase, rising operating costs (45% of total), and the pressure on profit margins.
• **Application**: Uses context well, such as referencing the 9.8% increase or the option of self-service kiosks. |
| **Level 3** | 6–9 | • **Evaluation**: Assesses both sides—e.g., contrasting the immediate rise in costs with potential productivity gains, price adjustments, or capital-labor substitution (kiosks).
• Makes a supported judgement on the net impact on profitability, considering short-term vs. long-term effects or price elasticity of demand (PED). |

### Indicative Content

**Negative impacts (Import costs rise):**
- **Higher Input Costs:** Because *Heritage Tweed* sources 70% of its raw material (wool) from Australia in AUD, the 8% depreciation of GBP means that importing these materials will cost 8% more in GBP terms. This raises the unit cost of production and pushes up total variable costs.
- **Profit Margin Squeeze:** If raw material costs rise significantly and the firm cannot easily raise prices, its gross profit margins will fall.

**Positive impacts (Export competitiveness rises):**
- **Export Pricing Advantage:** Because 60% of finished garments are sold in North America in USD, a weaker GBP makes *Heritage Tweed*'s exports cheaper and more competitive in the US market when priced in USD, or more profitable when USD revenues are converted back into GBP.
- **Windfall Revenue:** If *Heritage Tweed* maintains its USD selling prices, converting those USD revenues back to depreciated GBP will yield 8% more revenue per unit sold. This can offset the rise in import costs.

**Conclusion/Evaluation:**
The net impact depends on the balance between import costs and export revenues. Since 60% of revenue is in USD and 70% of raw materials (which is only a fraction of total costs, as labor, design, and overheads are likely in GBP) are in AUD, the overall impact on profitability is likely to be **positive**. The gain from converting USD export sales back into GBP is highly likely to outweigh the increased cost of importing raw wool, especially since luxury goods typically have high gross margins and relatively low material-to-retail price ratios.

**Marking Scheme (9 Marks Total)**

| Level | Marks | Descriptor |
|---|---|---|
| **Level 1** | 1–2 | • **Knowledge/Understanding**: Identifies or defines currency depreciation and its basic effects on imports or exports.
• **Application**: Mentions *Heritage Tweed*, wool from Australia, or US sales. |
| **Level 2** | 3–5 | • **Analysis**: Explains how GBP depreciation makes raw wool imports more expensive (in GBP) but makes USD-denominated sales more valuable or competitive when converted back.
• **Application**: Utilizes the specific proportions (70% imports, 60% exports) to build an analytical chain. |
| **Level 3** | 6–9 | • **Evaluation**: Weighs the conflicting pressures of rising import costs versus increased export revenue/competitiveness.
• Concludes with a supported judgement on whether profitability will rise or fall, perhaps by highlighting that raw materials are only one component of total costs compared to domestic UK manufacturing overheads and luxury markups. |

An introduction should define single-use plastic bans as a command-and-control regulation to correct negative externalities.

**Potential negative impacts:**
1. **Increased Costs of Production:** Alternative materials like bamboo, paper, or bioplastics are often more expensive per unit, increasing variable costs.
2. **Sunk Costs and Write-downs:** Existing machinery dedicated to plastic extrusion may become obsolete, leading to asset write-downs and capital losses.
3. **Transition Costs:** Retraining staff and retooling factories require significant capital expenditure.

**Potential positive impacts:**
1. **First-mover Advantage:** Firms that adapt quickly can capture a larger market share of the growing eco-friendly packaging market.
2. **Product Differentiation:** Sustainable packaging allows manufacturers to charge a premium to environmentally conscious fast-food brands.

**Evaluation:**
In the short run, profits are likely to fall due to high adjustment costs and regulatory friction. In the long run, competitiveness may be restored as economies of scale are achieved in alternative materials. The net effect depends heavily on whether governments offer transition subsidies and the time frame given for compliance.

**Level 1 (1-2 marks):** Knowledge and understanding of government bans, market failure, or business costs.
**Level 2 (3-4 marks):** Application to packaging manufacturers and the fast-food market.
**Level 3 (5-8 marks):** Analysis of the effects, including cost structures, capital write-downs, and innovation opportunities.
**Level 4 (9-12 marks):** Evaluation of the extent of these effects, considering short-run vs long-run impacts, the role of economies of scale, and government support.

An introduction should define the national minimum wage and competitiveness (the ability of domestic firms to sell goods effectively in international markets).

**Arguments for reduced competitiveness (negative impacts):**
1. **Higher Unit Labor Costs:** For labor-intensive manufacturing (e.g., textiles, simple assembly), a minimum wage hike directly increases variable costs, shifting the short-run aggregate supply (SRAS) or individual firm supply curve leftwards.
2. **Export Price Competitiveness:** Increased costs can force firms to raise prices, reducing demand in highly price-sensitive international markets.

**Arguments for maintained or improved competitiveness (positive impacts):**
1. **Productivity Gains (Efficiency Wage Theory):** Higher wages can boost worker morale, reduce absenteeism, and lower staff turnover costs, which improves overall operational efficiency.
2. **Incentive to Automate:** Rising labor costs provide a strong financial incentive to invest in capital machinery and technological innovation, raising long-term labor productivity and reducing unit costs over time.

**Evaluation:**
The overall impact depends on the capital-to-labor ratio of the manufacturing sub-sector. Highly automated advanced manufacturing will experience minimal impacts, whereas low-tech, labor-intensive manufacturing may face a severe decline in international competitiveness unless they can rapidly automate. It also depends on whether competitor nations are experiencing similar wage pressures.

**Level 1 (1-2 marks):** Knowledge and understanding of the national minimum wage or business competitiveness.
**Level 2 (3-4 marks):** Application to manufacturing firms and their cost structures.
**Level 3 (5-8 marks):** Analysis of the effects on production costs, productivity, export pricing, and investment incentives.
**Level 4 (9-12 marks):** Evaluation of the net impact, contrasting labor-intensive versus capital-intensive firms, short-run costs versus long-run productivity, and global competitive dynamics.

To structure a high-scoring 20-mark response: 1. Introduction: Define monetary policy and interest rates. Identify the policy dilemma: Westlandia is experiencing stagflation (high inflation of 8.2% and low growth of 0.5%). 2. Effects on Consumers: Positive: Savers benefit from higher returns on deposits, protecting the real value of their savings. Negative: Borrowers and mortgage holders (especially those on variable rates) see a reduction in discretionary income due to higher debt servicing costs. High credit costs discourage spending on big-ticket consumer durables, reducing consumption (C). 3. Effects on Businesses: Positive: Can reduce raw material costs if a higher interest rate strengthens the exchange rate, making imports cheaper. It stabilizes long-term expectations by anchoring inflation. Negative: The cost of borrowing for investment (I) increases, reducing the viability of expansion plans. Falling consumer demand reduces revenues and profit margins, which may force firms to reduce capacity or lay off workers. 4. Macroeconomic evaluation: The hike aims to reduce Aggregate Demand (AD) and curb demand-pull inflation. However, if inflation is primarily cost-push (global resource prices), this demand contraction may fail to solve the root problem while pushing the economy into a deep recession (as GDP is already at 0.5%). There are significant time lags (typically 12-18 months) before the full effects of the rate change are felt. 5. Conclusion/Judgement: Weigh up whether the risk of entrenched high inflation is worse than the risk of a technical recession. Credit the use of relevant economic concepts and diagrams (AD/AS shifts).

Level 1 (1-4 marks): Identification of basic points. Generic definitions of inflation or interest rates. Minimal application to the 8.2% inflation or 0.5% growth. Level 2 (5-8 marks): Good knowledge of how interest rates affect consumers and/or businesses. Some application to the context of slowing growth. Basic chains of reasoning explaining why consumption or investment might fall. Level 3 (9-14 marks): Strong analytical development. Explicitly explains the transmission mechanism of monetary policy on both consumers (mortgages, savings) and businesses (investment, revenue). Structured evaluation begins to weigh up benefits versus costs, noting the conflict with the growth objective. Level 4 (15-20 marks): Highly sophisticated and balanced evaluation. Deep analysis of the policy conflict (stagflation). Evaluates short-run pain vs long-run stability, the source of inflation (cost-push vs demand-pull), and time lags. Offers a clear, nuanced judgement on whether the Central Bank should proceed with the rate hike.

### Indicative Content

#### Introduction:
- Define **statutory minimum wage**: the legally binding lowest level of pay that employers can pay their employees.
- Contextualise Vandoria: an emerging economy transitioning to manufacturing/services. This means the economy is highly sensitive to labor costs and international competitiveness, but also suffers from poverty and low domestic consumption.

#### Arguments in favour of the minimum wage (Benefits):
- **Microeconomic / Business level**:
- *Efficiency Wage Theory*: Higher wages can boost worker morale, reduce absenteeism, and increase productivity, offsetting some of the increased wage costs.
- *Reduced Labour Turnover*: Recruitment and training costs for businesses might fall as workers are more likely to stay in stable, better-paying jobs.
- **Macroeconomic level**:
- *Poverty Alleviation*: Raises the standard of living for low-skilled workers, reducing income inequality and relative poverty.
- *Multiplier Effect*: Low-income workers have a high Marginal Propensity to Consume (MPC). Higher wages will boost consumer spending, shifting Aggregate Demand (AD) to the right and accelerating domestic economic growth.
- *Fiscal Impact*: Reduces government spending on social support/poverty alleviation programs and increases tax revenue (e.g., indirect taxes on consumption).

#### Arguments against the minimum wage (Costs / Drawbacks):
- **Microeconomic / Business level**:
- *Increased Costs of Production*: A 30% raise is a massive cost shock for labor-intensive sectors like textiles and food processing. Profit margins will shrink, potentially leading to business insolvencies.
- *Capital-Labour Substitution (Automation)*: Firms may respond by investing in machinery (capital) to replace more expensive workers, leading to structural technological unemployment.
- **Macroeconomic level**:
- *Classical Unemployment*: If the minimum wage is set significantly above the market-clearing equilibrium, it creates a surplus of labor supply over labor demand, leading to job losses.
- *Cost-Push Inflation*: To maintain profit margins, businesses may pass on higher labor costs to consumers in the form of higher prices.
- *Loss of Export Competitiveness*: Emerging economies often compete globally on low labor costs. A 30% rise could make Vandorian textiles more expensive than those of global rivals, worsening the balance of payments.
- *Informal Sector Growth*: High minimum wages can push workers and businesses into the unregulated shadow economy, where employment regulations and taxes are evaded entirely.

#### Evaluation and Synthesis:
- **Elasticity of Demand for Labour**: If the demand for labor in Vandoria's manufacturing sector is highly elastic (due to easily automated processes or intense global competition), employment levels will drop sharply. If inelastic, employment will remain relatively stable.
- **Magnitude and Speed**: A 30% jump overnight would be highly disruptive. A phased introduction over several years would allow firms to adapt, plan investment, and boost productivity gradually.
- **The Informal Sector Risk**: In emerging markets, enforcement is often weak. If the minimum wage is set too high, it might inadvertently expand the shadow economy, leaving workers with fewer protections than before.
- **Overall Verdict**: The policy is essential for long-term sustainable development to transition Vandoria from a 'low-wage' trap to a higher-productivity economy. However, it must be supported by supply-side policies (e.g., state-funded vocational training and subsidies for technology adoption) to ensure businesses remain globally competitive.

### Levels-Based Marking Grid (Total: 20 Marks)

#### Level 1 (1–4 Marks) - Knowledge & Understanding
- **Criteria**: Identification of basic economic terms and concepts surrounding minimum wage legislation.
- **Descriptor**: The candidate defines minimum wage and mentions basic impacts (e.g., 'wages will go up', 'some people might lose jobs'). There is little or no application to the context of Vandoria or an emerging economy.

#### Level 2 (5–8 Marks) - Application
- **Criteria**: Application of knowledge to the specific context of Vandoria and its business/economic environment.
- **Descriptor**: The candidate applies concepts to the textile/food processing sectors or the transition from agriculture. Shows understanding of how a 30% wage increase affects business costs and household consumption, but the analysis is superficial or lacks clear economic chains of reasoning.

#### Level 3 (9–14 Marks) - Analysis
- **Criteria**: Systematic analysis of the cause-and-effect relationships of the policy on both businesses and the wider economy.
- **Descriptor**: The candidate develops clear analytical paths. For example, connects wage increases to higher production costs, rising prices (cost-push inflation), and loss of export competitiveness. Also analyzes the positive macroeconomic transmission mechanism (higher MPC -> AD shift -> growth). Both micro and macro factors are examined.

#### Level 4 (15–20 Marks) - Evaluation
- **Criteria**: Critical evaluation of the policy, weighing arguments, and delivering a structured, reasoned judgment.
- **Descriptor**: The candidate provides balanced evaluative comments throughout. Evaluates key dependencies such as the price elasticity of demand for labor, the role of the informal sector, and short-run vs. long-run outcomes. Offers a nuanced concluding judgment on the overall desirability of the policy, highlighting the need for complementary supply-side policies to mitigate the risks of competitiveness loss.