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The present age of A and B are in the ratio 4 : 5 and after 5 years they will be in the ratio 5 : 6. The present age of A is
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- 10 years
- 20 years
- 25 years
- 40 years
Correct Option: B
Let the present age of A and B be 4x and 5x years respectively,
According to the question,
| = | ||
| 5x + 5 | 6 |
⇒ 25x + 25 = 24x + 30
⇒ x = 30 – 25 = 5
∴ A’s present age
= 4x = 4 × 5 = 20 years
