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A reduction of 21% in the price of an item enables a person to buy 3 kg more for ₹ 100. The reduced price of item per kg is
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- ₹ 5.50
- ₹ 7.50
- ₹ 10.50
- ₹ 7.00
Correct Option: D
Original price of article = ₹ x per kg.
| New price = ₹ | per kg | 100 |
| ∴ | - | = 3 | ||
| x | ||||
| 100 |
| ⇒ | - | = 3 | ||
| 79x | x |
| ⇒ | = 3 | 79x |
| ⇒ | = 3 | 79x |
| ⇒ | = 1 | 79x |
⇒ 79x = 700
| ⇒ x = | 79 |
| ∴ New price = | = | × | = ₹ 7 per kg | |||
| 100 | 100 | 79 |
Aliter : Using Rule 31,
Reduced price per kg.
| = | = ₹ 7 | 100 × 3 |
