3 years ago, the average age of a family of 5 members was 17 years. A baby havin

Question

3 years ago, the average age of a family of 5 members was 17 years. A baby having been born, the average age of the family is same today. The present age of the baby is

Options:

A . 1 $1/2$ year

B . 1 year

C . 3 years

D . 2 years

Answer: Option D
Answer: (d)Present age of child = 17 × 6 – (17 × 5 + 3 × 5) = 102 – (85 + 15) = 102 – 100 = 2 years

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