A ratio is a measure that can be compared. To interpret it, write the number, say what it means for each ringgit of sales, and compare it with something.
This lesson is part of financial statements and interpretation. It builds on reading income and expenditure information and leads to connecting figures to business decisions.
What do gross and net margin measure?
Both are percentages of sales, but they subtract different costs.
| Ratio | Formula | What it shows |
|---|---|---|
| Gross profit margin | gross profit ÷ sales × 100% | what is left after the cost of sales |
| Net profit margin | net profit ÷ sales × 100% | what is left after all expenses |
Check the definitions your syllabus and teacher use, because some books name these slightly differently.
Worked example: a fictional bakery
Roti Sari is a fictional bakery. Its sales are RM120 000, its cost of sales is RM78 000, and its expenses are RM30 000.
Gross profit = 120 000 − 78 000 = RM42 000.
Gross profit margin = 42 000 ÷ 120 000 × 100% = 35%.
Net profit = 42 000 − 30 000 = RM12 000.
Net profit margin = 12 000 ÷ 120 000 × 100% = 10%.
Interpretation. For every RM1 of sales, RM0.35 remains after the cost of sales, and RM0.10 remains after all expenses. The gap of RM0.25 is spent on expenses such as rent and wages.
Suppose last year’s net margin was 12%. Then this year’s 10% shows that expenses took a larger share of sales.
The interpretation uses the number, the meaning and a comparison. Without the comparison, 10% alone is hard to judge.
The mistake that costs marks
The common slip is to write “The net profit margin is 10%” and stop.
| Step | Wrong | Right |
|---|---|---|
| Number | 10% | 10% |
| Meaning | not stated | RM0.10 remains from each RM1 of sales |
| Comparison | none | last year was 12%, so expenses took a bigger share |
| Verdict | a number | an interpretation |
The marker wants to see that you understand what the percentage says.
Check yourself
A shop has sales of RM60 000, cost of sales RM39 000 and expenses RM12 000. Find both margins and write one interpretation sentence.
Answer
Gross profit = 60 000 − 39 000 = RM21 000, so the gross margin is 21 000 ÷ 60 000 × 100% = 35%.
Net profit = 21 000 − 12 000 = RM9 000, so the net margin is 9 000 ÷ 60 000 × 100% = 15%.
Interpretation: RM0.35 of each RM1 of sales remains after the cost of sales, and RM0.15 remains after all expenses, so expenses take RM0.20 of each RM1.
What to study next
Go on to connecting figures to business decisions. When you want mixed cases, try the practice set.
The business case answer planner gives a layout for an interpretation answer. For a teacher to work through ratios with you, see online one-to-one Business tuition.