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When a husband and wife married, their average age was 23 years. Five years later they have a child who is one year old. What is the average age of the three-member family at present?

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

Correct answer: 19 years

Solution

At marriage the couple's combined age was 2 x 23 = 46. After five years each has aged five years, adding 10, so the couple totals 56; with the 1-year-old child the family total is 57. Average = 57/3 = 19 years.

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