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If the cost price of 10 articles is equal to the selling price of 8 articles, then gain per cent is
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- 10%
- 8%
- 50%
- 25%
Correct Option: D
Let the C.P. of each article be 1.
∴ C.P. of 8 articles = $ 8
and S.P. of 8 articles = $ 10
Profit = S.P. of 8 articles - C.P. of 8 articles = 10 - 8 = $ 2
| Profit percent = | × 100 | C.P. of 8 articles |
| Profit percent = | × 100 = 25% | 8 |
Second method to solve this question :
Here, p = 10, q = 8
| Gain % = |  |  | × 100 | ||
| q |
| Gain % = | | | × 100 | ||
| 8 |
| Gain % = | = 25% | 8 |
