S5 BAFS Practice Paper (Set 4): Inventory Costing And FIFO, Marginal Costing And Break-even, Ratio Analysis, Time Value Of Money And Loan Repayment, Marketing Mix And Corporate Social Responsibility

S5 BAFS Practice Paper (Set 4): Inventory Costing and FIFO, Marginal Costing and Break-even, Ratio Analysis, Time Value of Money and Loan Repayment, Marketing Mix and Corporate Social Responsibility

2026-11-15

Senior Secondary BAFS

S5 BAFS practice paper Set 4: 100 marks on FIFO inventory costing, CVP, ratio analysis, time value of money, loans and marketing ethics, with full worked answers.

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Paper details　S5 BAFS practice paper with answers: FIFO, CVP, financial ratios, loan amortisation, marketing ethics.

Question 1: Accounting Cycle, Depreciation and Trial Balance

Show all workings.

#	Question	Answer and marking notes
1	A company buys a machine for $240,000 with an estimated residual value of $40,000 and a useful life of 5 years. Calculate the annual depreciation using the straight-line method.	Annual depreciation = (240,000 – 40,000) / 5 = 40,000 per year.
2	Using the same machine, calculate the net book value at the end of year 3.	Accumulated depreciation = 40,000 x 3 = 120,000; net book value = 240,000 – 120,000 = 120,000.
3	A month-end trial balance shows debit totals of $512,000 and credit totals of $508,500. Compute the difference and state which side of the suspense account it is entered.	Difference = 512,000 – 508,500 = 3,500. The credit side is short by 3,500, so 3,500 is entered on the credit side of the suspense account.
4	Sales for the period are $480,000 and cost of goods sold is $300,000. Calculate the gross profit and the gross profit ratio.	Gross profit = 480,000 – 300,000 = 180,000; gross profit ratio = 180,000 / 480,000 x 100% = 37.5%.

Question 2: Inventory Costing (FIFO and Weighted Average)

Opening inventory is 100 units at $20 each; purchases are 200 units at $24 each and 150 units at $26 each; 300 units are sold during the period.

#	Question	Answer and marking notes
5	Calculate the cost of goods sold under the first-in-first-out (FIFO) method.	First 100 units from opening stock: 100 x $20 = $2,000; next 200 units: 200 x $24 = $4,800; cost of goods sold = $2,000 + $4,800 = $6,800.
6	Calculate the quantity and value of closing inventory under FIFO.	Closing inventory = 450 – 300 = 150 units, all from the latest batch at $26: 150 x $26 = $3,900.
7	Calculate the weighted average cost per unit and the cost of goods sold under the weighted average method (2 decimal places).	Total cost of goods available = $10,700 for 450 units; average cost = 10,700 / 450 = $23.78; cost of goods sold = 300 x $23.78 = $7,133.33.
8	Using the FIFO cost of goods sold and average inventory, calculate the inventory turnover (2 decimal places).	Average inventory = ($2,000 + $3,900) / 2 = $2,950.00; turnover = $6,800 / $2,950.00 = 2.31 times.

Question 3: Marginal Costing and Break-even Analysis

A product sells for $80 per unit, variable cost is $48 per unit and fixed costs are $240,000 per month.

#	Question	Answer and marking notes
9	Calculate the unit contribution and the contribution ratio.	Unit contribution = $80 – $48 = $32; contribution ratio = $32 / $80 x 100% = 40.0%.
10	Calculate the break-even quantity in units and the break-even sales revenue.	Break-even quantity = $240,000 / $32 = 7,500 units; break-even revenue = 7,500 x $80 = $600,000.
11	If 9,000 units are actually sold, calculate the profit.	Total contribution = 9,000 x $32 = $288,000; profit = $288,000 – $240,000 = $48,000.
12	Calculate the margin of safety in units and as a percentage.	Margin of safety = 9,000 – 7,500 = 1,500 units; percentage = 1,500 / 9,000 x 100% = 16.7%.

Question 4: Financial Statement Ratio Analysis

Current assets are $420,000 (including inventory of $180,000), current liabilities $210,000, total liabilities $560,000, total assets $1,400,000, annual sales $1,260,000 and net profit $126,000.

#	Question	Answer and marking notes
13	Calculate the current ratio and the quick ratio (2 decimal places).	Current ratio = 420,000 / 210,000 = 2.0; quick ratio = (420,000 – 180,000) / 210,000 = 1.14.
14	Calculate total equity and the gearing ratio (2 decimal places).	Equity = 1,400,000 – 560,000 = $840,000; gearing = 560,000 / 1,400,000 x 100% = 40.0%.
15	Calculate the net profit margin and the total asset turnover.	Net profit margin = 126,000 / 1,260,000 x 100% = 10.0%; asset turnover = 1,260,000 / 1,400,000 = 0.9 times.
16	Calculate the return on equity (ROE) and state which ratio most needs improvement.	ROE = 126,000 / $840,000 x 100% = 15.0%. The quick ratio of 1.14 is thin because inventory dominates current assets, and asset turnover is only 0.9 times, so inventory control and asset utilisation should be improved first.

Question 5: Time Value of Money and Loan Repayment

Show all workings and round money amounts to 2 decimal places.

#	Question	Answer and marking notes
17	A principal of $50,000 earns simple interest at 4% per year for 3 years. Calculate the interest and the total amount.	Simple interest = 50,000 x 4% x 3 = $6,000.00; total amount = 50,000 + 6,000.00 = $56,000.00.
18	The same principal is invested at 4% compounded annually for 3 years. Calculate the amount and the interest.	Amount = 50,000 x 1.04^3 = $56,243.20; interest = $56,243.20 – 50,000 = $6,243.20.
19	A loan of $120,000 carries 0.5% interest per month and is repaid in 24 equal monthly instalments. Calculate the monthly instalment, total repayment and total interest.	Instalment = P x i / [1 – (1 + i)^-n] = 120,000 x 0.005 / [1 – 1.005^-24] = $5,318.47; total repayment = $5,318.47 x 24 = $127,643.28; total interest = $127,643.28 – 120,000 = $7,643.28.
20	A credit card charges 2.5% per month compounded monthly. Calculate the effective annual rate (2 decimal places).	Effective annual rate = (1 + 0.025)^12 – 1 = 34.49%, far above the nominal 30% per year, so the balance should be cleared quickly.

Question 6: Marketing Mix, Cost Decisions and Corporate Social Responsibility

A small business is reviewing next year promotional and product strategy.

#	Question	Answer and marking notes
21	Plan A costs $40,000 in promotion and generates extra revenue of $96,000; Plan B costs $30,000 and generates $66,000. Calculate both returns on investment and recommend one.	Plan A profit = 56,000, ROI = 56,000 / 40,000 = 140.0%; Plan B profit = 36,000, ROI = 36,000 / 30,000 = 120.0%. Plan A is recommended as it earns the higher return.
22	Product X sells for $150 with a cost of $90; Product Y sells for $200 with a cost of $130. Calculate the gross margin and unit contribution of each, and state which should be expanded first when capacity is limited.	Product X margin = 60 / 150 = 40.0% with a contribution of $60; Product Y margin = 70 / 200 = 35.0% with a contribution of $70. Expand Y first because its unit contribution is higher.
23	A new product has fixed costs of $180,000 and a unit contribution of $45. Calculate the break-even quantity and comment on the decision if market research shows only 3,000 units can be sold.	Break-even quantity = 180,000 / 45 = 4,000 units. Selling 3,000 units is below break-even and would lose 45,000 (3,000 x 45 – 180,000), so the product should not be launched unless fixed costs fall or unit contribution rises.
24	Suggest two corporate social responsibility measures suitable for a small business and explain the benefits to brand image and customer loyalty.	Sustainable sourcing (eco packaging and local suppliers) and community involvement (staff volunteer days, sponsoring school events). The first reduces environmental risk and gives a marketing angle; the second builds community ties and word of mouth. Both raise brand trust and repeat purchase.

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