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A reduction of 20% in the price of an apple enables a man to buy 10 apples more for ₹ 54. The reduced price of apples per dozen is
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- ₹ 4.32
- ₹ 12.96
- ₹ 10.80
- ₹ 14.40
Correct Option: B
Let the original price of apples be ₹ x/ dozen
| ∴ New price = ₹ | = /dozen | 5 |
| ∴ | - | = | ||||
| x | 12 | |||||
| 5 |
| ⇒ 54 |  | - |  | = | |||||
| 4x | x | 6 |
| ⇒ 54 | | | = | ||||
| 4x | 6 |
| ⇒ | - | ⇒ 4x = | ||||
| 4x | 6 | 5 |
| ∴ | = | = ₹ 12.96 | ||
| 5 | 5 × 5 |
Aliter : Using Rule 31,
| Reduced price = | 20 × 54 | |||||
| 100 × | ||||||
| 12 | ||||||
| = | × 12 = ₹ 12.96 per kg | 1000 |
