2024 Cambridge IAL Accounting (9706) 模擬試題連答案詳解

Dividends do not represent a cost of operating the business or generating revenue. Instead: 1. They are an appropriation of profit, meaning they are a distribution of the net profit already earned to the owners. 2. In accordance with accounting standards, transactions with owners in their capacity as owners are excluded from the Statement of Profit or Loss and are instead shown as a movement in the Statement of Changes in Equity.

1 mark for identifying that dividends are an appropriation/distribution of profit (not an operating expense). 1 mark for identifying that dividends are transactions with owners in their capacity as owners or are disclosed in the Statement of Changes in Equity (SOCE).

To calculate the revised gross profit, we adjust the draft gross profit of $185,000 as follows: Draft gross profit: $185,000; Add: Understatement of closing inventory: +$4,200 (increases closing inventory, which reduces cost of sales); Less: Sale-or-return revenue reversal: -$8,000 (reduces revenue); Add: Sale-or-return inventory cost: +$5,000 (increases closing inventory); Less: Carriage inwards correction: -$1,500 (carriage inwards increases cost of sales). Revised Gross Profit = $185,000 + $4,200 - $8,000 + $5,000 - $1,500 = $184,700.

1 mark for adding $4,200 for closing inventory adjustment. 1 mark for subtracting $8,000 for sale-or-return revenue. 1 mark for adding $5,000 for cost of sale-or-return goods. 1 mark for subtracting $1,500 for carriage inwards adjustment. 1 mark for final correct revised gross profit of $184,700 (or CF if previous errors are carried forward consistently).

To calculate the revised gross profit, we adjust the draft gross profit of $185,000 as follows: Draft gross profit: $185,000; Add: Understatement of closing inventory: +$4,200 (increases closing inventory, which reduces cost of sales); Less: Sale-or-return revenue reversal: -$8,000 (reduces revenue); Add: Sale-or-return inventory cost: +$5,000 (increases closing inventory); Less: Carriage inwards correction: -$1,500 (carriage inwards increases cost of sales). Revised Gross Profit = $185,000 + $4,200 - $8,000 + $5,000 - $1,500 = $184,700.

1 mark for adding $4,200 for closing inventory adjustment. 1 mark for subtracting $8,000 for sale-or-return revenue. 1 mark for adding $5,000 for cost of sale-or-return goods. 1 mark for subtracting $1,500 for carriage inwards adjustment. 1 mark for final correct revised gross profit of $184,700 (or CF if previous errors are carried forward consistently).

Here is the Statement of Profit or Loss (or statement of revised profit) for Vanguard Retail Ltd:

| Item | $ | $ | Notes / Calculation |
| :--- | :---: | :---: | :--- |
| **Draft profit from operations** | | **145,000** | Starting figure |
| Less: Depreciation on buildings | (18,000) | | \( (\$400,000 - \$40,000) / 20 \) |
| Add: Prepaid distribution costs | 6,200 | | Prepaid expenses added back to profit |
| **Adjusted profit from operations** | | **133,200** | Operating profit |
| Less: Finance costs (debenture interest) | | (9,000) | Total annual interest: \( \$150,000 \times 6\% \) |
| **Profit before tax** | | **124,200** | |
| Less: Income tax | | (18,500) | Estimated tax expense |
| **Profit for the year** | | **105,700** | Final net profit |

The 8 marks are allocated as follows:
- **1 mark** (AO1): For calculating the depreciation expense correctly: \( (\$400,000 - \$40,000) / 20 = \$18,000 \) and deducting it.
- **1 mark** (AO1): For adding back the prepaid distribution costs of $6,200.
- **1 mark** (AO2): For correctly calculating the adjusted profit from operations of $133,200 (allow follow-through on arithmetic errors).
- **1 mark** (AO1): For calculating total debenture interest of $9,000 (\( \$150,000 \times 6\% \)).
- **1 mark** (AO2): For correctly showing the full $9,000 finance cost deducted below profit from operations.
- **1 mark** (AO2): For calculating the profit before tax of $124,200.
- **1 mark** (AO1): For deducting the income tax charge of $18,500.
- **1 mark** (AO2): For calculating the final profit for the year of $105,700 (allow follow-through on previous arithmetic).

Workings: 1. Shares in issue at 1 January 2022 = $600,000 / $0.50 = 1,200,000 shares. 2. Rights issue: 1,200,000 * 1/4 = 300,000 shares. Increase in Ordinary Share Capital = 300,000 * $0.50 = $150,000. Increase in Share Premium = 300,000 * ($0.80 - $0.50) = $90,000. 3. Shares in issue after rights issue = 1,200,000 + 300,000 = 1,500,000 shares. 4. Bonus issue: 1,500,000 * 1/5 = 300,000 shares. Increase in Ordinary Share Capital = 300,000 * $0.50 = $150,000. This is funded fully from Share Premium (reducing Share Premium by $150,000). 5. Shares in issue after bonus issue = 1,500,000 + 300,000 = 1,800,000 shares. 6. Dividend: 1,800,000 * $0.05 = $90,000. 7. Retained earnings: $240,000 (opening) + $115,000 (profit) - $90,000 (dividend) = $265,000. 8. Revaluation reserve: $80,000 (opening) + $45,000 (revaluation) = $125,000. 9. Share premium: $120,000 (opening) + $90,000 (rights) - $150,000 (bonus) = $60,000. 10. Ordinary shares: $600,000 (opening) + $150,000 (rights) + $150,000 (bonus) = $900,000. Equity Section of the Statement of Financial Position at 31 December 2022: Ordinary shares of $0.50 each: $900,000; Share premium: $60,000; Revaluation reserve: $125,000; Retained earnings: $265,000; Total Equity: $1,350,000.

Ordinary shares of $0.50 each: $900,000 (2 marks) [1 mark for rights issue increase of $150,000, 1 mark for bonus issue increase of $150,000]. Share premium: $60,000 (2 marks) [1 mark for rights premium of $90,000, 1 mark for bonus issue reduction of $150,000]. Revaluation reserve: $125,000 (1 mark) [1 mark for revaluation addition of $45,000]. Retained earnings: $265,000 (2 marks) [1 mark for adding profit of $115,000, 1 mark for deducting dividend of $90,000]. Total Equity: $1,350,000 (1 mark) [for correct calculation and presentational format of the total equity section]. Total: 8 marks.

### Evaluation of Option 1: 8% Non-Cumulative Preference Shares
- **Profitability & Cash Flow**: The annual dividend obligation is \( \$40,000 \) (\( 500,000 \times \$1 \times 8\% \)). This is higher than the debenture interest, and preference dividends are not tax-deductible, meaning they must be paid out of after-tax profits.
- **Risk**: Financial risk is lower. Because the shares are non-cumulative, if the company has a poor year and lacks sufficient profits, it can choose not to pay the preference dividend without entering default.
- **Gearing & Control**: Preference shares are equity, meaning they do not increase the company's gearing ratio as much as debt, which could leave borrowing capacity open for the future. They generally do not carry voting rights, so existing ordinary shareholders' control is not diluted.

### Evaluation of Option 2: 6% Debentures
- **Profitability & Cash Flow**: The annual interest cost is \( \$30,000 \) (\( \$500,000 \times 6\% \)). This is lower than the preference dividend by \( \$10,000 \). Furthermore, interest is an expense in the Income Statement and is tax-deductible, reducing the net effective cost to the company.
- **Risk**: Financial risk is higher. Debenture interest is a fixed, legal obligation that must be paid regardless of profit levels. Failure to pay can lead to liquidation or receivership. Additionally, the principal of \( \$500,000 \) must be repaid at maturity.
- **Gearing & Control**: Issuing debentures increases non-current liabilities and therefore increases the gearing ratio, potentially making it harder or more expensive to secure loans in the future. Control is unaffected as debenture holders have no voting rights.

### Conclusion & Advice
- If Vanguard plc expects steady, predictable profits from its expansion, it should choose **Option 2 (Debentures)** to benefit from the lower cost of capital, tax efficiency, and preservation of cash.
- If the expansion's returns are uncertain or highly cyclical, the directors should choose **Option 1 (Preference Shares)** to minimize the threat of insolvency during downturns.

Award marks as follows (maximum 7 marks):

**Option 1: Preference Shares (Max 3 marks)**
- (1 mark) calculation of annual dividend: \( \$40,000 \) (and/or identification that it is more expensive than Option 2).
- (1 mark) explanation of lower risk: dividends are non-cumulative/not mandatory if profits are low.
- (1 mark) discussion of tax/gearing impact: dividends are not tax-deductible OR preference shares do not increase gearing as debt would.

**Option 2: Debentures (Max 3 marks)**
- (1 mark) calculation of annual interest: \( \$30,000 \) (and/or identification that it is cheaper than Option 1).
- (1 mark) explanation of higher risk: interest is mandatory regardless of profit levels / repayment of principal at maturity.
- (1 mark) discussion of tax/gearing impact: interest is tax-deductible OR debentures increase gearing and financial risk.

**Recommendation (1 mark)**
- (1 mark) for a clear, reasoned recommendation linking to the analysis of risk vs. cost of capital.

Preparing control accounts provides several benefits to a business:

1. **Error Detection**: It helps identify arithmetical errors in the individual ledger accounts. This is done by comparing the balance on the control account with the total of the schedule of balances extracted from the subsidiary ledgers.
2. **Fraud Prevention**: It acts as an internal control check and deters fraud or collusion, particularly when there is a segregation of duties (i.e., the employee maintaining the control account is not the same person maintaining the individual subsidiary ledgers).
3. **Efficiency in Information Gathering**: It provides an immediate total of trade receivables or trade payables, which facilitates the rapid preparation of trial balances, draft statement of financial position, and interim financial statements without needing to list every single individual customer or supplier account balance.

Award 1 mark for each valid benefit listed, up to a maximum of 3 marks:

- Helps to detect/locate errors in the subsidiary ledgers (1 mark)
- Acts as an internal check / deters fraud through segregation of duties (1 mark)
- Provides a quick/immediate total of trade receivables or trade payables (1 mark)
- Verifies the arithmetical accuracy of the subsidiary ledgers (1 mark)
- Assists in the quick preparation of the trial balance or draft financial statements (1 mark)

(Maximum 3 marks)

To find the corrected trade payables control account balance, we adjust the draft balance for errors that affect the control account itself:

* **Draft Balance**: $12,400 (Cr)
* **Error 1 (Undercast purchases journal)**: Since the purchases journal total is posted to the credit side of the control account, an undercast means the control account is understated on the credit side. To correct this, we add (credit) $200.
* **Error 2 (Contra entry omitted)**: A contra entry reduces trade payables and should be debited to the control account. Since it was omitted, we debit the control account by $350.
* **Error 3 (Omission in individual ledger)**: This error only affected the individual supplier's account in the purchases ledger. It does not affect the control account. (No adjustment needed)
* **Error 4 (Discounts received incorrectly credited)**: Discounts received should be debited to the control account. Since $90 was incorrectly credited, we must debit the account by $180 (double the amount) to correct the error.

**Calculation:**
\(\text{Corrected Balance} = \$12,400 + \$200 - \$350 - \$180 = \$12,070\)

* 1 mark for adding $200 for the undercast purchases journal (Error 1).
* 1 mark for subtracting $350 for the contra entry (Error 2).
* 1 mark for identifying that the individual supplier ledger omission (Error 3) has no effect on the control account.
* 1 mark for subtracting $180 to correct the discounts received error (Error 4).

### Part (a) Statement of Reconciliation

| Adjustment Description | Trade Receivables Control Account ($) | Sales Ledger Balances ($) |
| :--- | :---: | :---: |
| **Draft Balances** | **34,150** | **35,120** |
| 1. Correction of Customer X posting error ($860 - $680) | | (180) |
| 2. Contra entry omitted from Control Account | (450) | |
| 3. Correction of discount allowed debited instead of credited ($120 \times 2) | | (240) |
| 4. Correction of sales day book undercast | 1,000 | |
| **Corrected Balances** | **34,700** | **34,700** |

*Worked calculations:*
- **Customer X correction:** Customer ledger was debited with $860 instead of $680, making the individual ledger balance too high by $180. To correct this, deduct $180 from the sales ledger balances.
- **Contra entry correction:** Omitted from the control account. To correct, deduct $450 from the TRCA.
- **Discount allowed correction:** Debited instead of credited in the customer account. The net effect of putting $120 on the debit side instead of the credit side is an overstatement of $240. To correct this, deduct $240 from the sales ledger balances.
- **Sales day book undercast:** SDB total was too low by $1,000, meaning TRCA was also under-debited. To correct this, add $1,000 to the TRCA.

### Part (b) Contra Entries Explanation
- **Why it is recorded:** A contra entry is used when a business has a customer who is also their supplier (acting as a mutual debtor and creditor). To avoid paying two separate invoices, the offset reduces both the receivable and payable by the lower of the two amounts.
- **How it is recorded:** Credit the Trade Receivables Control Account and Debit the Trade Payables Control Account.

### Part (a) Reconciliation (4 marks)
- **1 mark** for correct adjustment of SDB undercast (+$1,000) to the Trade Receivables Control Account.
- **1 mark** for correct adjustment of contra entry (-$450) to the Trade Receivables Control Account.
- **1 mark** for correct adjustment of Customer X's posting error (-$180) in the Sales Ledger.
- **1 mark** for correct adjustment of the discount allowed double-correction (-$240) in the Sales Ledger.

### Part (b) Contra Explanation (2 marks)
- **1 mark** for stating that a contra entry offsets mutual trade receivables and payables (debts) to minimize transaction/cash flow steps using the lower of the balances.
- **1 mark** for identifying the correct double entry posting (Credit Trade Receivables Control Account and Debit Trade Payables Control Account).

1. **Accruals (matching) concept application (2 marks):**
- The credit sales are recognized in the current financial year. The accruals concept requires that any associated expenses or potential losses, such as estimated doubtful debts, must be matched against this revenue in the same accounting period (1 mark).
- This ensures that the profit for the period is calculated accurately by acknowledging the estimated expense of non-payment in the period the transaction took place, rather than in a future period when the debt actually becomes irrecoverable (1 mark).

2. **Prudence concept application (2 marks):**
- The prudence concept states that assets and profits should not be overstated, and liabilities and expenses should not be understated (1 mark).
- By deducting the provision for doubtful debts from gross trade receivables, the receivables are presented at a realistic, net realizable value in the statement of financial position, preventing the overstatement of current assets (1 mark).

Award marks as follows (maximum of 4 marks):

**Accruals Concept (Max 2 marks):**
- 1 mark for explaining that the estimated expense of doubtful debts is matched against the credit sales of the same period.
- 1 mark for explaining that this prevents the overstatement of profit for the current period.

**Prudence Concept (Max 2 marks):**
- 1 mark for stating that assets (receivables) and profits must not be overstated.
- 1 mark for explaining that creating/increasing the provision ensures trade receivables are presented at their net realizable value in the statement of financial position.

When deciding whether to create a specific provision for doubtful debts, the business must evaluate the risk of non-payment.

Key factors include:
1. **Aging of the debt**: Debts that are significantly overdue are higher risk.
2. **Customer's financial status**: Reliable information that the customer is facing liquidation, bankruptcy, or severe financial distress.
3. **Customer payment history**: A track record of late payments or broken payment promises.
4. **Disputes**: Ongoing formal disputes regarding the quality of goods supplied or the invoice amount.

Award 1 mark for each valid factor identified, up to a maximum of 2 marks.

Acceptable points:
- The length of time the debt has been outstanding (debt aging) (1)
- The financial position/creditworthiness of the customer (e.g., bankruptcy, liquidation) (1)
- Past payment history/experience with the customer (1)
- Existence of disputes with the customer over goods or invoicing (1)

### **Calculations:**

1. **Adjusted Trade Receivables:**
$$\text{Adjusted Trade Receivables} = \$84,500 - \$2,500 = \$82,000$$

2. **Required Provision at 31 December 2022:**
$$\text{Required Provision} = \$82,000 \times 4\% = \$3,280$$

3. **Adjustment required:**
$$\text{Decrease in Provision} = \$3,600 \text{ (opening balance)} - \$3,280 \text{ (closing balance)} = \$320 \text{ (transfer to Income Statement as credit entry)}$$

---

### **Provision for Doubtful Debts Account**

$$\begin{array}{llr|llr}
\textbf{Date} & \textbf{Details} & \textbf{\$} & \textbf{Date} & \textbf{Details} & \textbf{\$}\\
\hline
\text{2022} & & & \text{2022} & & \\
\text{Dec 31} & \text{Income statement} & 320 & \text{Jan 1} & \text{Balance b/d} & 3,600 \\
\text{Dec 31} & \text{Balance c/d} & 3,280 & & & \\
\hline
& & \mathbf{3,600} & & & \mathbf{3,600} \\
\hline
& & & \text{2023} & & \\
& & & \text{Jan 1} & \text{Balance b/d} & 3,280 \\
\end{array}$$

- **1 mark** for correct calculation of adjusted receivables ($82,000) and the new provision ($3,280).
- **1 mark** for entering the opening balance on 1 January 2022 (Balance b/d) of $3,600 on the credit side.
- **1 mark** for the correct ledger entry of $320 on the debit side with details 'Income statement'.
- **1 mark** for balancing the account with Balance c/d of $3,280 on the debit side on 31 December 2022.
- **1 mark** for bringing down the opening balance (Balance b/d) of $3,280 on 1 January 2023 on the credit side (must match the c/d figure).

Step 1: Calculate the adjusted trade receivables after writing off the irrecoverable debt:
\( \text{Adjusted Trade Receivables} = \$91,200 - \$1,200 = \$90,000 \)

Step 2: Calculate the required year-end provision for doubtful debts:
\( \text{Required Provision} = 4\% \times \$90,000 = \$3,600 \)

Step 3: Calculate the movement/adjustment needed in the provision:
\( \text{Adjustment} = \text{Required Provision} (\$3,600) - \text{Opening Provision} (\$3,400) = \$200 \text{ (increase)} \)

Step 4: Record the journal entry for the increase in provision:
Debit: Income statement $200
Credit: Provision for doubtful debts $200

Award marks as follows:
- 1 mark for calculating the adjusted trade receivables of $90,000.
- 1 mark for calculating the new provision of $3,600.
- 1 mark for calculating the increase of $200.
- 1 mark for the correct double entry (Debit Income statement and Credit Provision for doubtful debts with $200).

Overhead allocation occurs when a whole overhead cost item can be uniquely identified and charged directly to a single specific cost centre (e.g., the salary of the manager of the machining department). Overhead apportionment is used when an overhead cost is common to multiple departments and must be split or shared among them using an equitable basis (e.g., rent apportioned based on floor area).

1 mark for a clear definition of overhead allocation (charging an entire cost to a single cost centre). 1 mark for a clear definition of overhead apportionment (splitting a shared cost across multiple cost centres using a logical basis). Maximum 2 marks.

Under-absorption occurs when the overheads charged to production (Predetermined OAR multiplied by Actual Hours) are less than the actual overheads incurred. The two main reasons are: 1) The actual overhead expenditure incurred was higher than the budgeted overhead expenditure. 2) The actual level of activity (such as direct labour hours or machine hours) was lower than the budgeted level of activity used to calculate the OAR.

1 mark for explaining that actual overheads incurred were greater than budgeted overheads. 1 mark for explaining that the actual activity level (hours or units) was lower than the budgeted activity level. Maximum 2 marks.

### Apportionment calculations:

1. **Rent and Rates** (apportioned based on **Floor area**):
- Total Floor Area = \( 1,200 + 800 + 400 = 2,400 \) sq m
- Machining: \( \frac{1,200}{2,400} \times \$24,000 = \$12,000 \)
- Assembly: \( \frac{800}{2,400} \times \$24,000 = \$8,000 \)
- Maintenance: \( \frac{400}{2,400} \times \$24,000 = \$4,000 \)

2. **Machinery Depreciation** (apportioned based on **Book value of machinery**):
- Total Book Value = \( \$80,000 + \$20,000 = \$100,000 \)
- Machining: \( \frac{\$80,000}{\$100,000} \times \$15,000 = \$12,000 \)
- Assembly: \( \frac{\$20,000}{\$100,000} \times \$15,000 = \$3,000 \)
- Maintenance: \( \$0 \)

### Apportionment Table:

| Overhead | Basis | Machining ($) | Assembly ($) | Maintenance ($) |
| :--- | :--- | :---: | :---: | :---: |
| Rent and Rates | Floor area | 12,000 | 8,000 | 4,000 |
| Machinery Depr. | Book value | 12,000 | 3,000 | - |
| **Total Overheads**| | **24,000** | **11,000** | **4,000** |

Award marks as follows:

- **Rent and Rates apportionment (3 marks total)**:
- Machining: $12,000 (1 mark)
- Assembly: $8,000 (1 mark)
- Maintenance: $4,000 (1 mark)

- **Machinery Depreciation apportionment (2 marks total)**:
- Machining: $12,000 (1 mark)
- Assembly: $3,000 (1 mark)
- (Maintenance is $0 / nil - no mark)

- **Totals (1 mark total)**:
- Award 1 mark if all three department totals are correct: Machining ($24,000), Assembly ($11,000), Maintenance ($4,000).

Step 1: Calculate the Maintenance overheads allocated to Machining: \( \$30,000 \times 60\% = \$18,000 \). Step 2: Calculate total Machining overheads: \( \$120,000 + \$18,000 = \$138,000 \). Step 3: Calculate the OAR: \( \$138,000 / 15,000 \text{ machine hours} = \$9.20 \text{ per machine hour} \).

1 mark for calculating the reapportioned share of Maintenance overheads of $18,000 (or showing $30,000 x 60%). 1 mark for finding the total Machining overheads of $138,000. 1 mark for dividing total overheads by the correct base of 15,000 machine hours. 1 mark for the correct final answer of $9.20 per machine hour.

1. Predetermined Overhead Absorption Rate (OAR) = Budgeted Overheads / Budgeted Direct Labour Hours = $180,000 / 15,000 hours = $12.00 per direct labour hour. 2. Absorbed Overheads = Actual Direct Labour Hours * OAR = 15,200 hours * $12.00 = $182,400. 3. Under/Over-absorption = Absorbed Overheads - Actual Overheads = $182,400 - $186,500 = -$4,100. Since the absorbed overheads are less than the actual overheads, the overhead is $4,100 under-absorbed.

1 mark for calculating correct OAR of $12.00 per hour. 1 mark for calculating correct absorbed overheads of $182,400. 1 mark for calculating $4,100 and identifying it as under-absorbed (both the numerical value and 'under-absorbed' direction are required for this mark).

1. Direct labor cost: Department A: 50 hours * $16 = $800. Department B: 30 hours * $20 = $600. Total direct labor cost = $1,400. 2. Prime cost: Direct materials ($1,450) + Direct labor ($1,400) = $2,850. 3. Production overheads: Department A: 120% * $800 = $960. Department B: 30 hours * $9.50 = $285. Total production overheads = $1,245. 4. Total production cost: Prime cost ($2,850) + Production overheads ($1,245) = $4,095. 5. Non-production overheads: 10% * $4,095 = $409.50. 6. Total cost: Total production cost ($4,095) + Non-production overheads ($409.50) = $4,504.50. 7. Profit markup: 20% * $4,504.50 = $900.90. 8. Quoted selling price: Total cost ($4,504.50) + Profit markup ($900.90) = $5,405.40.

1 mark for calculating the total direct labor cost of $1,400 (or separate department labor costs of $800 and $600). 1 mark for calculating the correct prime cost of $2,850. 1 mark for calculating total production overheads of $1,245 (Department A $960 + Department B $285). 1 mark for calculating the total production cost of $4,095. 1 mark for calculating non-production overheads of $409.50 and total cost of $4,504.50 (own figure rule applies). 1 mark for calculating the final selling price of $5,405.40 (own figure rule applies for 20% markup on total cost).

### Analysis of the Proposal

**Advantages of Departmental Overhead Absorption Rates:**
1. **Reflects different cost drivers:** The Machining department is capital-intensive (dominated by machine operations), meaning its overheads (depreciation, power, maintenance) are driven by machine hours. The Assembly department is labour-intensive, where overheads are driven by direct labour hours. Using departmental rates reflects these operational realities.
2. **More accurate product costing:** Products that spend more time in Machining but require little assembly work will be charged an appropriate amount of machine-based overheads, rather than being under-costed under a labour-hour-based blanket rate.
3. **Better pricing and competitiveness:** Accurate product costs prevent under-pricing (which leads to hidden losses or eroded profit margins) and over-pricing (which can lead to lost sales and uncompetitive market positioning).
4. **Improved cost control and accountability:** Under- or over-absorption of overheads can be calculated and analyzed for each department individually, allowing senior management to hold departmental managers accountable for budget variances.

**Disadvantages of Departmental Overhead Absorption Rates:**
1. **Increased cost and complexity:** Establishing and maintaining departmental rates requires extra accounting effort, including primary apportionment of overheads to cost centres, secondary apportionment of service cost centres, and detailed tracking of actual machine and labour hours by department.
2. **Arbitrary allocations remain:** Even with departmental rates, many common overheads (e.g., factory rent, heating, security) must still be apportioned using arbitrary bases (such as floor area or book value), which does not guarantee total accuracy.
3. **Alternative methods exist:** If the company wants highly accurate costing, it could consider Activity-Based Costing (ABC) instead, though ABC is even more complex and expensive to implement.

**Conclusion / Recommendation:**
The directors should implement the change to departmental overhead absorption rates. Because of the stark operational differences between Machining and Assembly, continuing to use a single factory-wide direct labour hour rate will lead to highly distorted product costs, which could lead to critical errors in pricing and strategic decision-making. The benefits of improved cost accuracy and pricing security outweigh the incremental administrative costs.

**Arguments in favour of departmental rates (Max 3 marks):**
* **[1 mark]** Identifies that Machining is capital-intensive and Assembly is labour-intensive, requiring different cost drivers (machine hours vs. labour hours).
* **[1 mark]** Explains that departmental rates lead to more accurate product costing.
* **[1 mark]** Links more accurate costing to better pricing decisions (avoiding over-pricing / losing sales or under-pricing / losing profits).
* **[1 mark]** Mentions better cost control / accountability for departmental managers.

**Arguments against departmental rates (Max 3 marks):**
* **[1 mark]** Identifies that it is more complex, time-consuming, and expensive to calculate and administer (requires primary/secondary apportionment).
* **[1 mark]** Explains that arbitrary elements still remain in the allocation and apportionment of common costs (e.g., rent, heating).
* **[1 mark]** Recognises that other costing systems (like Activity-Based Costing) might offer even greater accuracy if the company is prepared to invest more.

**Advice / Recommendation (1 mark):**
* **[1 mark]** Clear recommendation/advice supported by a concluding summary statement (e.g., recommend the switch because the current blanket rate causes significant product cost distortion due to the different resource characteristics of the departments).