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

1. 19 years
2. 23 years
3. 29.3 years
4. 28.5 years

Correct answer: 19 years

Solution

At the time of marriage, the combined age of husband and wife was 23 × 2 = 46. After 5 years, their combined age becomes 56, and the child is 1 year old, so total family age is 57. The average age of the 3 family members is 57/3 = 19 years.

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