The average age of a husband and his wife was 23 years at the times of their marriage. After five years they have a one-year old child. The average age of the family now is.

A. 19 years

B. 23 years

C. 28.5 years

D. 29.3 years

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Solution(By Apex Team)

Sum of the present ages of husband, wife and child $\begin{array}{l}\text{= (23 × 2 + 5 × 2) + 1}\\ \text{= 57 years}\\ \text{∴ Required average}\\ =\Large\frac{57}{3}\\ =19\ \text{years}\end{array}$