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A shopkeeper purchased a chair marked at ₹ 800, at two successive discounts of 10% and 15% respectively. He spent ₹ 28 on transportation and sold the chair for 800. His gain percent is :
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- 40%
- 30%
- 25%
- 14%
Correct Option: C
Single equivalent discount
| = |  | 15 + 10 − |  | = 23.5% | |
| 100 |
| ∴ Cost price = | |
| 100 |
= ₹ 612
Actual C.P = ₹ (612 + 28) = ₹ 640
| ∴ Gain % = | × 100 | |
| 100 |
| ∴ Gain % = | = 25 % | |
| 640 |
