Secondary 4 Principles of Accounts Semestral Assessment 1 (Mid-Year) Paper 3

SA1 Practice Paper — Version 3

Principles of Accounts (Secondary 4) — Answer Key

Section A: Short Answer Questions [20 marks]

1. State two reasons why a business should value inventory at the lower of cost and net realisable value. [2]

Answer:

• To comply with the prudence concept, which requires that assets are not overstated and losses are anticipated as soon as they are known.
• To ensure that inventory is not reported at more than its recoverable amount, giving a true and fair view of the business's financial position.

Marking: 1 mark each for any two valid reasons. Accept: prevents overstatement of assets/profits; ensures realistic valuation; complies with prudence concept; avoids showing inventory above what the business can actually recover.

Common mistake: Students may confuse this with the going concern concept. The prudence concept is the key principle here.

2. Define net realisable value (NRV) in the context of inventory valuation. [2]

Answer: Net realisable value is the estimated selling price of inventory less any costs that are necessary to complete the sale (i.e., costs to complete and costs to sell).

Marking: 1 mark for "estimated selling price" and 1 mark for "less costs to complete/sell." Both elements required for full marks.

Common mistake: Students sometimes define NRV as just the selling price without subtracting selling/completion costs.

3. A business uses the FIFO method of inventory valuation. During a period of rising prices, state whether the closing inventory value will be higher or lower compared to using the LIFO method. Explain your answer. [2]

Answer: The closing inventory value under FIFO will be higher than under LIFO.

Explanation: Under FIFO, the oldest (cheapest) costs are assigned to cost of sales first, leaving the newest (most expensive) costs in closing inventory. Under LIFO, the newest (most expensive) costs are assigned to cost of sales, leaving the oldest (cheapest) costs in closing inventory. Therefore, in a period of rising prices, FIFO gives a higher closing inventory value.

Marking: 1 mark for stating "higher" and 1 mark for a correct explanation referencing oldest vs. newest costs.

4. Calculate the cost of sales for March 2025. [2]

Answer:

$\text{Cost of Sales} = \text{Opening Inventory} + \text{Purchases} - \text{Closing Inventory}$

$\text{Cost of Sales} = \$12{,}000 + \$48{,}000 - \$15{,}000 = \$45{,}000$

Marking: 1 mark for correct formula/working, 1 mark for correct final answer ($45,000).

Common mistake: Students may forget to subtract closing inventory or may add it instead.

5. Distinguish between cost of sales and cost of goods sold in the context of a trading business. Are they the same? Explain. [2]

Answer: For a trading business, cost of sales and cost of goods sold are the same thing. Both represent the cost of purchasing the goods that were sold during the accounting period. The formula is:

$\text{Cost of Sales} = \text{Opening Inventory} + \text{Purchases} - \text{Closing Inventory}$

(For a manufacturing business, cost of goods sold would include manufacturing costs such as direct materials, direct labour, and factory overheads.)

Marking: 1 mark for stating they are the same for a trading business, 1 mark for explanation or formula.

6. State one advantage and one disadvantage of using the weighted average cost method for inventory valuation. [2]

Answer:

• Advantage: It smooths out price fluctuations, so the cost assigned to each unit is a fair average and is not affected by the timing of purchases. It is also simple to apply once the average is calculated.
• Disadvantage: The average cost may not reflect the actual cost of the specific units sold, and it needs to be recalculated after each purchase (in the weighted average method), which can be time-consuming.

Marking: 1 mark for a valid advantage, 1 mark for a valid disadvantage.

7. Using the FIFO method, calculate the cost of the units sold on 20 January. [2]

Answer: Under FIFO, the first units purchased are the first ones sold.

• 200 units from opening inventory @ $8 =$1,600
• 50 units from 15 January purchase @ $10 =$500

$\text{Cost of units sold} = \$1{,}600 + \$500 = \$2{,}100$

Marking: 1 mark for identifying the correct layers (200 from opening, 50 from purchase), 1 mark for correct final answer ($2,100).

Common mistake: Students may use the latest purchase price for all 250 units instead of applying FIFO layering.

8. Explain why the prudence concept requires inventory to be valued at the lower of cost and net realisable value. [2]

Answer: The prudence concept states that a business should not overstate its assets or income. If the net realisable value of inventory falls below its original cost, the business would be overstating its assets (and therefore its profit) if it continued to value the inventory at cost. By valuing inventory at the lower of cost and NRV, the business recognises the loss immediately, ensuring that the financial statements present a cautious and realistic picture.

Marking: 1 mark for referencing the prudence concept, 1 mark for explaining the consequence (prevents overstatement of assets/profits).

9. Calculate the net realisable value of the damaged inventory. [2]

Answer:

$\text{NRV} = \text{Estimated Selling Price} - \text{Costs to Sell}$

$\text{NRV} = \$2{,}200 - \$200 = \$2{,}000$

Marking: 1 mark for correct formula, 1 mark for correct answer ($2,000).

Common mistake: Students may subtract the original cost instead of costs to sell, or may add costs to sell instead of subtracting.

10. State the formula for calculating the inventory turnover rate (in times per year). [2]

Answer:

$\text{Inventory Turnover Rate} = \frac{\text{Cost of Sales}}{\text{Average Inventory}}$

where

$\text{Average Inventory} = \frac{\text{Opening Inventory} + \text{Closing Inventory}}{2}$

Marking: 1 mark for the main formula, 1 mark for the average inventory formula. Award 2 marks if both are clearly shown.

Section B: Structured Questions [28 marks]

11. Lim's Electronics — Year ended 30 June 2025

(a) Trading account extract to calculate gross profit. [4]

Answer:

Lim's Electronics Trading Account for the year ended 30 June 2025

Marking:

• 1 mark for correct heading/title
• 1 mark for correct cost of sales calculation ($30,000 +$160,000 + $5,000 −$35,000 = $160,000)
• 1 mark for including carriage inwards as part of cost of purchases
• 1 mark for correct gross profit ($90,000)

Common mistake: Students often forget to include carriage inwards in the cost of sales calculation.

(b) Calculate the inventory turnover rate. [3]

Answer:

$\text{Average Inventory} = \frac{\$30{,}000 + \$35{,}000}{2} = \$32{,}500$

$\text{Inventory Turnover Rate} = \frac{\$160{,}000}{\$32{,}500} = 4.92 \text{ times}$

Marking: 1 mark for correct average inventory calculation, 1 mark for correct formula application, 1 mark for correct final answer (4.92 times).

(c) Suggest one reason why a high inventory turnover rate is generally considered favourable. [1]

Answer: A high inventory turnover rate means the business is selling its inventory quickly, which reduces the risk of inventory becoming obsolete or outdated, and reduces storage costs. It also means the business is efficiently converting inventory into sales revenue.

Marking: 1 mark for any valid reason (e.g., less risk of obsolescence, lower storage costs, efficient use of working capital, faster conversion to sales).

12. Mei Ling's Clothing Boutique — FIFO Inventory Ledger Card

(a) FIFO inventory ledger card for April 2025. [5]

Answer:

Detailed working:

• 1 Apr: Opening balance: 100 units @ $12.00 =$1,200
• 8 Apr: Purchase 200 @ $13.00. Balance: 100 @$12.00 + 200 @ $13.00 = 300 units,$3,800
• 15 Apr: Sale of 180 units. Under FIFO, sell oldest first:
  • 100 units @ $12.00 =$1,200 (all of opening batch)
  • 80 units @ $13.00 =$1,040 (from 8 Apr purchase)
  • Cost of issues = $2,240
  • Remaining balance: 120 units @ $13.00 =$1,560
• 22 Apr: Purchase 150 @ $14.00. Balance: 120 @$13.00 + 150 @ $14.00 = 270 units,$3,660
• 29 Apr: Sale of 120 units. Under FIFO, sell oldest first:
  • 120 units @ $13.00 =$1,560 (all of remaining 8 Apr batch)
  • Remaining balance: 150 units @ $14.00 =$2,100

Marking: 1 mark each for correct balance after each of the 5 dates (1 Apr, 8 Apr, 15 Apr, 22 Apr, 29 Apr). Award follow-through marks if the method is consistently applied.

(b) Value of closing inventory on 30 April 2025. [1]

Answer: $2,100 (150 units @$14.00)

Marking: 1 mark for $2,100. Accept follow-through from (a).

13. Raj Trading — Weighted Average Cost Method

(a) Calculate the cost of closing inventory using the weighted average cost method. [4]

Answer:

Step 1: Calculate total units and total cost of all goods available for sale:

Step 2: Calculate weighted average cost per unit:

$\text{Weighted Average Cost per Unit} = \frac{\$13{,}300}{1{,}800} = \$7.39 \text{ (to 2 d.p.)}$

Step 3: Calculate cost of closing inventory:

$\text{Closing Inventory} = 350 \times \$7.39 = \$2{,}586.50$

Step 4: Calculate cost of sales:

$\text{Cost of Sales} = 1{,}450 \times \$7.39 = \$10{,}715.50$

(Check: $2,586.50 +$10,715.50 = $13,302 — small rounding difference of$2 due to rounding the average cost. Accept $13,300 total.)

More precise approach (periodic weighted average):

$\text{Cost of Sales} = \frac{1{,}450}{1{,}800} \times \$13{,}300 = \$10{,}713.89$

$\text{Closing Inventory} = \frac{350}{1{,}800} \times \$13{,}300 = \$2{,}586.11$

Marking: 1 mark for total cost ($13,300), 1 mark for weighted average cost per unit ($7.39), 1 mark for correct method applied to closing inventory, 1 mark for correct final answer ($2,586.11 or$2,586.50 — accept either method).

(b) Calculate the cost of sales for the year using the weighted average cost method. [2]

Answer:

$\text{Cost of Sales} = 1{,}450 \times \$7.39 = \$10{,}715.50$

OR (proportional method):

$\text{Cost of Sales} = \frac{1{,}450}{1{,}800} \times \$13{,}300 = \$10{,}713.89$

Marking: 1 mark for correct method, 1 mark for correct answer (accept $10,713.89 or$10,715.50).

14. Alpha Trading and Beta Trading

(a) Calculate the inventory turnover rate for each business. [4]

Answer:

Alpha Trading:

$\text{Average Inventory} = \frac{\$25{,}000 + \$35{,}000}{2} = \$30{,}000$

$\text{Inventory Turnover Rate} = \frac{\$180{,}000}{\$30{,}000} = 6.0 \text{ times}$

Beta Trading:

$\text{Average Inventory} = \frac{\$40{,}000 + \$20{,}000}{2} = \$30{,}000$

$\text{Inventory Turnover Rate} = \frac{\$240{,}000}{\$30{,}000} = 8.0 \text{ times}$

Marking: 1 mark each for correct average inventory (Alpha and Beta), 1 mark each for correct turnover rate (Alpha and Beta).

(b) Which business manages its inventory more efficiently? Explain. [2]

Answer: Beta Trading manages its inventory more efficiently because it has a higher inventory turnover rate (8.0 times compared to Alpha's 6.0 times). This means Beta sells and replaces its inventory more frequently throughout the year, indicating more efficient use of inventory investment, lower holding costs, and less risk of inventory becoming obsolete.

Marking: 1 mark for identifying Beta Trading, 1 mark for correct explanation referencing the higher turnover rate.

15. Grace Trading — Inventory Write-Down

(a) Calculate the net realisable value of this batch. [2]

Answer:

$\text{NRV} = \text{Estimated Selling Price} - \text{Costs to Complete and Sell}$

$\text{NRV} = \$5{,}500 - \$500 = \$5{,}000$

Marking: 1 mark for correct formula, 1 mark for correct answer ($5,000).

(b) State the value at which this batch should be reported in the statement of financial position. Explain. [3]

Answer: The batch should be reported at $5,000 (the NRV) in the statement of financial position.

Explanation: According to the prudence concept, inventory must be valued at the lower of cost and net realisable value. Since the NRV ($5,000) is lower than the original cost ($8,000), the inventory should be written down to $5,000. This ensures that assets and profits are not overstated.

Marking: 1 mark for stating $5,000, 1 mark for referencing "lower of cost and NRV," 1 mark for referencing the prudence concept.

(c) Calculate the inventory write-down and state the journal entry. [3]

Answer:

$\text{Inventory Write-Down} = \text{Cost} - \text{NRV} = \$8{,}000 - \$5{,}000 = \$3{,}000$

Journal Entry:

Marking: 1 mark for correct write-down amount ($3,000), 1 mark for correct debit entry, 1 mark for correct credit entry.

Common mistake: Students may debit the inventory account instead of crediting it. Remember: writing down inventory reduces the asset, so credit inventory.

16. Sam's Stationery — Year ended 30 September 2025

(a) Calculate the cost of sales. [2]

Answer:

$\text{Cost of Sales} = \text{Sales} - \text{Gross Profit}$

$\text{Cost of Sales} = \$320{,}000 - \$96{,}000 = \$224{,}000$

Marking: 1 mark for correct formula, 1 mark for correct answer ($224,000).

(b) Calculate the purchases for the year. [2]

Answer:

$\text{Cost of Sales} = \text{Opening Inventory} + \text{Purchases} - \text{Closing Inventory}$

$\$224{,}000 = \$28{,}000 + \text{Purchases} - \$36{,}000$

$\text{Purchases} = \$224{,}000 - \$28{,}000 + \$36{,}000 = \$232{,}000$

Marking: 1 mark for correct rearrangement of formula, 1 mark for correct answer ($232,000).

(c) Calculate the inventory turnover rate. [2]

Answer:

$\text{Average Inventory} = \frac{\$28{,}000 + \$36{,}000}{2} = \$32{,}000$

$\text{Inventory Turnover Rate} = \frac{\$224{,}000}{\$32{,}000} = 7.0 \text{ times}$

Marking: 1 mark for correct average inventory, 1 mark for correct final answer (7.0 times).

Section C: Scenario-Based Question [12 marks]

17. Diana's Delights — Year ended 31 December 2025

(a) Prepare a trading account for the year ended 31 December 2025. [4]

Answer:

Diana's Delights Trading Account for the year ended 31 December 2025

Marking: 1 mark for correct heading, 1 mark for correct cost of sales calculation ($10,000 +$72,000 − $14,000 =$68,000), 1 mark for correct subtraction of closing inventory, 1 mark for correct gross profit ($117,000).

(b) Calculate the inventory turnover rate. [3]

Answer:

$\text{Average Inventory} = \frac{\$10{,}000 + \$14{,}000}{2} = \$12{,}000$

$\text{Inventory Turnover Rate} = \frac{\$68{,}000}{\$12{,}000} = 5.67 \text{ times}$

Marking: 1 mark for correct average inventory ($12,000), 1 mark for correct formula application, 1 mark for correct answer (5.67 times).

(c) Compare Diana's inventory turnover rate with her friend's rate of 8.5 times. Advise Diana. [2]

Answer: Diana's inventory turnover rate of 5.67 times is significantly lower than her friend's rate of 8.5 times. This means Diana is holding her inventory for a longer period before selling it. Diana should investigate why her inventory is turning over more slowly — possible reasons include overstocking, slow-moving products, or ineffective marketing. She should consider reducing her inventory levels, offering promotions to clear slow-moving stock, or improving her purchasing planning to better match demand.

Marking: 1 mark for identifying that Diana's rate is lower/worse, 1 mark for a valid suggestion or explanation.

(d) Calculate the adjusted closing inventory value after accounting for the out-of-date specialty ingredients. Explain which accounting concept applies. [3]

Answer:

Step 1: Calculate NRV of the specialty ingredients:

$\text{NRV} = \text{Estimated Selling Price} - \text{Selling Costs} = \$1{,}800 - \$150 = \$1{,}650$

Step 2: Compare with cost:

• Cost of specialty ingredients = $2,500
• NRV = $1,650
• NRV is lower, so the ingredients should be valued at $1,650

Step 3: Calculate the write-down:

$\text{Write-down} = \$2{,}500 - \$1{,}650 = \$850$

Step 4: Calculate adjusted closing inventory:

$\text{Adjusted Closing Inventory} = \$14{,}000 - \$850 = \$13{,}150$

Accounting concept: The prudence concept requires inventory to be valued at the lower of cost and net realisable value. Since the NRV ($1,650) is below cost ($2,500), the inventory must be written down to prevent overstatement of assets and profit.

Marking: 1 mark for correct NRV calculation ($1,650), 1 mark for correct adjusted closing inventory ($13,150), 1 mark for identifying the prudence concept with explanation.

Mark Summary