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The average age of a husband and a wife was 27 years when they married 4 years ago. The average age of the husband, the wife and a new-born child is 21 years now. The present age of the child is
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- 4 years
- 3 years
- 2 years
- 1 year
- 4 years
Correct Option: D
Given that , 4 years ago , The average age of a husband and a wife = 27 years
Sum of the present age of husband and wife = 2 × 27 + 8 = 62 years
The average age of the husband, the wife and a new-born child = 21 years
Sum of the present age of husband, wife and child = 21 × 3 = 63 years
∴ present age of the child = 63 – 62 = 1 year
