The average age of a husband and his wife was 23 years at the beginning of their marriage. After five years they have a one-year old child. The average age of the family of three, when the child was born, was
Options:
A . 24 years
B . 23 years
C . 20 years
D . 18 years
Answer: Option D Answer: (d)After five years of marriage, Husband + wife + child = 46 + 10 + 1 = 57 years At the time of birth of child, Husband + wife + child = 57 – 3 = 54 years∴ Required average age = $54/3$ = 18 years
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