-
If I would have purchased 11 articles for $ 10 and sold all the articles at the rate of 10 for $ 11, the profit percent would have been :
-
- 10%
- 11%
- 21%
- 100%
Correct Option: C
Here , C.P. of 11 articles = $ 10
| ∴ C.P. of an article = $ | 11 |
S.P. of 10 articles = $ 11
| ∴ S.P. of an article = $ | 10 |
| ∴ Profit = | - | 10 | 11 |
| Profit = | = $ | 110 | 110 |
| Profit % = | × | = 21% | 110 | 10 |
Second method to solve this question :
Here, a = 11, p = 10 and b = 10, q = 11
| Gain % = |  | aq - bp |  | × 100% | |
| bp |
| Gain % = | | 11 × 11 - 10 × 10 | | × 100% | |
| 10 × 10 |
| Gain % = | | 121 - 100 | | × 100% = 21% | |
| 100 |
