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Question
The ages of A and B are in the ratio 5 : 7. Five years ago. their ages were in the ratio 5 : 8. The respective present ages (in years) are:
Options
10, 14
20, 28
25, 40
15, 21
MCQ
Solution
15, 21
Explanation:
A | B | ||
Past `->` | 5 × 2 | : | 8 × 2 |
`↑` 5 | `↑` 5 | ||
Present `->` | 5 × 3 | : | 7 × 3 |
⇒ : 5 `->` 5 years
: 15 `->` 15 years
: 21 `->` 21 years
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Problems Based on Ages (Entrance Exam)
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