📚 Case Study Practice: Year 12 CIE Accounting | Year 12 CIE 会计案例分析实战演练
In CIE Year 12 Accounting, the ability to apply theoretical knowledge to a practical case study is essential. This article presents a comprehensive case study featuring Greentech Ltd, a manufacturer of eco-friendly appliances. Through this scenario, you will practise key AS Level skills: ratio analysis, cash budgeting, standard costing variances, and investment appraisal. Each section is designed to mirror the style of examination questions, with detailed calculations, interpretations, and bilingual explanations to strengthen your understanding.
在 CIE Year 12 会计课程中，将理论知识应用于实际案例分析的能力至关重要。本文提供了一个全面案例，主角是环保电器制造商 Greentech Ltd。通过这个情景，你将练习 AS Level 核心技能：比率分析、现金预算编制、标准成本差异和投资评价。每个部分都模仿考试题目的风格，包含详细计算、解读和双语讲解，以加深你的理解。
1. Case Background | 案例背景
Greentech Ltd is a private limited company that manufactures energy‑saving kitchen appliances. The following summarised financial statements are extracted for the years ended 31 December 2023 and 2024. All figures are in USD ('000).
Greentech Ltd 是一家生产节能厨房电器的私营有限公司。以下摘要财务报表截取自截至 2023 年 12 月 31 日与 2024 年 12 月 31 日的财政年度，所有金额以千美元为单位。
| Income Statement ($'000) | 2023 | 2024 |
|---|---|---|
| Revenue | 500 | 600 |
| Cost of sales | (300) | (390) |
| Gross profit | 200 | 210 |
| Operating expenses | (80) | (90) |
| Net profit | 120 | 120 |
| Statement of Financial Position ($'000) | 2023 | 2024 |
|---|---|---|
| Non‑current assets | 200 | 250 |
| Inventory | 50 | 80 |
| Trade receivables | 60 | 90 |
| Bank | 10 | 5 |
| Total assets | 320 | 425 |
| Trade payables | 40 | 70 |
| Bank overdraft | 5 | 15 |
| Current liabilities | 45 | 85 |
| Net current assets | 75 | 90 |
| 10% loan | 100 | 100 |
| Net assets | 175 | 240 |
| Share capital | 100 | 100 |
| Retained earnings | 75 | 140 |
| Total equity & liabilities | 320 | 425 |
The company has no preference shares, and all profits after interest are retained. Loan interest of $10'000 per annum is already deducted within operating expenses. The board now wants a thorough financial analysis to guide future decisions.
该公司没有优先股，所有税后利润均留存。贷款年利息$10'000 已在营业费用中扣除。董事会现在希望进行一次全面的财务分析，以指导未来的决策。
2. Profitability Ratio Analysis | 盈利性比率分析
Profitability ratios measure the ability of a business to generate profit relative to sales, assets, and equity. For Greentech Ltd we calculate the gross margin, net profit margin, and return on capital employed (ROCE) for both years. The formulas are shown below.
盈利能力比率衡量企业相对于销售、资产和权益创造利润的能力。我们为 Greentech Ltd 计算这两年的毛利率、净利率和资本回报率 (ROCE)。计算公式如下。
Gross margin = (Gross profit ÷ Revenue) × 100%
净利率 = (净利润 ÷ 收入) × 100%
ROCE = (Operating profit ÷ Capital employed) × 100%
For 2023: Gross margin = (200 ÷ 500) × 100% = 40.0%. Net profit margin = (120 ÷ 500) × 100% = 24.0%. Capital employed = Equity + Long‑term debt = 175 + 100 = $275' rating profit is net profit before interest, but since interest is already deducted in the $120'000 net profit, we must add back interest of $10'000 to obtain operating profit of $130'000. Thus ROCE = (130 ÷ 275) × 100% = 47.3%.
2023年：毛利率 = (200 ÷ 500) × 100% = 40.0%。净利率 = (120 ÷ 500) × 100% = 24.0%。资本负债 = 权益 + 长期借款 = 175 + 100 = $275'000。由于净利润$120'000 已扣减利息，经营利润需加回利息$10'000，得到$130'000。因此 ROCE = (130 ÷ 275) × 100% = 47.3%。
For 2024: Gross margin = (210 ÷ 600) × 100% = 35.0%. Net profit margin = (120 ÷ 600) × 100% = 20.0%. Operating profit = 120 + 10 = $130'000. Capital employed = 240 + 100 = $340'000. ROCE = (130 ÷ 340) × 100% = 38.2%.
2024年：毛利率 = (210 ÷ 600) × 100% = 35.0%。净利率 = (120 ÷ 600) × 100% = 20.0%。经营利润 = 120 + 10 = $130'000。资本负债 = 240 + 100 = $340'000。ROCE = (130 ÷ 340) × 100% = 38.2%。
The falling gross margin indicates that cost of sales grew faster than revenue, perhaps due to rising material prices or less efficient production. Although net profit remained at $120'000 in absolute terms, all three margins have declined, signalling weakening profitability efficiency. This is a red flag for management.
毛利率的下降说明销售成本的增长快于收入增长，可能是由于原材料价格上涨或生产效率降低。尽管净利润绝对值保持在$120'000，但三个利润率指标全部下滑，表明盈利效率减弱。这对管理层是一个危险信号。
3. Liquidity and Efficiency Ratios | 流动性与效率比率
Liquidity ratios assess a company's ability to meet short‑term obligations, while efficiency ratios show how effectively assets are managed. We compute the current ratio, quick ratio, inventory turnover, trade receivable days, and trade payable days.
流动性比率评估企业偿还短期债务的能力，而效率比率则反映资产管理的有效性。我们计算流动比率、速动比率、存货周转率、应收账款周转天数和应付账款周转天数。
Current ratio = Current assets ÷ Current liabilities
Quick ratio = (Current assets − Inventory) ÷ Current liabilities
24: Current assets = 80+90+5 = 175; Current liabilities = 70+15 = 85. Current ratio = 175 ÷ 85 = 2.06:1. Quick ratio = (175−80) ÷ 85 = 95 ÷ 85 = 1.12:1.
2023年：流动资产 = 120，流动负债 = 45，流动比率 = 2.67:1，速动比率 = 1.56:1。2024年：流动资产 = 175，流动负债 = 85，流动比率 = 2.06:1，速动比率 = 1.12:1。
Both liquidity ratios have fallen, indicating a tighter cash position. The quick ratio is approaching the danger level of 1:1, meaning the company relies more on inventory to cover short‑term debts.
两个流动性比率均在下降，表明现金状况趋紧。速动比率正逼近 1:1 的警戒水平，意味着公司更依赖存货来偿还短期债务。
Inventory turnover = Cost of sales ÷ Average inventory (times per year)
Trade receivable days = (Trade receivables ÷ Revenue) × 365
Trade payable days = (Trade payables ÷ Cost of sales) × 365
e days = (90 ÷ 600) × 365 = 54.75 days. Trade payable days = (70 ÷ 390) × 365 = 65.5 days.
2024年：平均存货 = (50+80)÷2 = 65。存货周转率 = 390 ÷ 65 = 6.0 次。应收账款天数 = (90 ÷ 600) × 365 = 54.75 天。应付账款天数 = (70 ÷ 390) × 365 = 65.5 天。
pany takes roughly 50 days to convert cash spent on inventory back into cash from sales. An increasing cycle could strain liquidity further.
现金周转周期可估算为：存货持有期 = 365 ÷ 6 = 60.8 天，周转周期 = 60.8 + 54.75 − 65.5 = 50.05 天。这意味着公司将存货投入转换为销售现金大约需要 50 天。周期延长可能会进一步加剧流动性压力。
4. Interpretation of Financial Performance | 财务表现解读
The overall picture shows a business that is growing in revenue but suffering from margin compression and weakening liquidity. The gross margin decline of 5 percentage points is substantial, suggesting that selling prices could not be raised in line with cost increases, or that production inefficiencies arose. Because net profit stayed flat, the company managed to control operating expenses in relative terms, but ROCE fell sharply as the capital base expanded without a proportional increase in operating profit.
总体来看，企业收入增长，但利润率受到压缩，流动性减弱。毛利率下降 5 个百分点相当明显，表明售价未能与成本同步提高，或出现了生产效率问题。由于净利润持平，公司在相对意义上控制了营业费用，但随着资本基数扩大而经营利润未能同比例增长，ROCE 大幅下降。
The liquidity decline is partly driven by higher inventories and receivables, which grew by 60% and 50% respectively while revenue grew by only 20%. This could indicate overstocking or slower collection from customers. The increase in payables provides some relief, but the overdraft doubling from $5'000 to $15'000 is a worry. The company may soon face a cash crisis if corrective actions are not taken.
流动性下降部分源于存货和应收款项的大幅增加，二者分别增长了 60% 和 50%，而收入仅增长 20%。这可能表明存货积压或客户回款变慢。应付账款的增加带来一定缓冲，但银行透支从 $5'000 翻倍至 $15'000 令人担忧。如果不采取纠正措施，公司可能很快面临现金危机。
From a shareholder' ividends are not paid, the return on equity can be calculated: 2023 ROE = 120 ÷ 175 = 68.6%; 2024 ROE = 120 ÷ 240 = 50.0% p in ROE reflects the same problem: profits are not keeping pace with the growth in owners' investment.
从股东角度看，尽管未支付股利，权益回报率可以计算如下：2023年 ROE = 120 ÷ 175 = 68.6%；2024年 ROE = 120 ÷ 240 = 50.0%。虽然回报率仍然很高，但 ROE 的下降反映了同样的问题：利润未能与所有者投入的增长保持同步。
5. Cash Budgeting | 现金预算编制
The management of Greentech Ltd wants to prepare a cash budget for the first quarter of 2025. The forecast data are:
Sales (20% cash, 80% credit collected one month after sale): January $70'000, February $80'000, March $90'000. November and December 2024 sales were $65'000 and $68'000 respectively (all on credit).
Cost of sales is 65% of sales, and purchases of goods are made to meet the next month's sales. Payment for purchases: 40% in the month of purchase, 60% in the following month.
Monthly operating expenses (excluding depreciation $2'000) are $15'000, paid in cash. A new machine costing $20'000 is planned for February, payable in March. The opening cash balance on 1 January 2025 is $5'000.
Greentech Ltd 管理层希望编制 2025 年第一季度的现金预算。预测数据如下：
销售收入（20% 现金，80% 赊销，赊销款于销售后一个月收回）：一月 $70'000，二月 $80'000，三月 $90'000。2024 年 11 月与 12 月销售额分别为 $65'000 及 $68'000（均为赊销）。
销售成本为销售收入的 65%，购货以应对下月销售。货款支付：当月支付 40%，次月支付 60%。
每月营业费用（不含折旧 $2'000）为 $15'000，以现金支付。二月份计划购买一台新机器，价值 $20'000，于三月份付款。2025 年 1 月 1 日的期初现金余额为 $5'000。
We compile the cash budget month by month.
我们逐月编制现金预算。
| Cash Budget Q1 2025 ($'000) | Jan | Feb | Mar |
|---|---|---|---|
| Opening balance | 5.0 | −0.8 | −17.4 |
| Cash receipts: | |||
| Cash sales (20% of current month) | 14.0 | 16.0 | 18.0 |
| Receipts from credit sales (80% of prior month) | 54.4* | 56.0 | 64.0 |
| Total receipts (A) | 68.4 | 72.0 | 82.0 |
| Cash payments: | |||
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