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The marked price of a radio is ₹ 480. The shopkeeper allows a discount of 10% and gains 8%. If no discount is allowed, his gain percent would be
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- 18%
- 18.5%
- 20.5%
- 20%
Correct Option: D
Given that , The marked price of a radio = ₹ 480
If the CP of radio be y, then
| of y = | ||
| 100 | 100 |
| ⇒ | = 432 | |
| 100 |
| ⇒ y = | = ₹ 400 | |
| 108 |
| Gain percent (if no discount is allowed) = | × 100 = 20% | |
| 400 |
Second method :
Here, r = 8%, D = 10%, M.P. = ₹ 480
With the help of given formula ,
| = | ||
| C.P. | 100 − D |
| = | ||
| C.P. | 100 − 10 |
| C.P. = | = ₹ 400 | ||
| 108 |
| Gain % (without discount) = | × 100 | |
| C.P. |
| Gain % = | × 100 | |
| 400 |
| Gain % = | × 100 = 20% | |
| 400 |
