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The ratio of present age of two brothers is 1 : 2 and 5 years back. the ratio was 1 : 3. What will be the ratio of their age after 5 years ?
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- 1 : 4
- 2 : 3
- 3 : 5
- 5 : 6
Correct Option: C
Let the present age of brothers be x and 2x years.
Then, 5 years ago,
| : | ||
| 2x − 5 | 3 |
⇒ 3x – 15 = 2x – 5
⇒ x = 15 – 5 = 10
∴ Age of elder brother
= 10 × 2 = 20
∴ Required ratio
| = | = | = 3 : 5 | ||
| 20 + 5 | 25 |
