Averages · Question 28 · Hard
Averages question 28
Three years ago, the average age of a family of 5 members was 25 years. A baby has since been born, and the average age of the family of 6 is now 23.5 years. How old is the baby now?
- 2 years
- 3 years
- 1 year
- 6 months
Answer and explanation
Answer: C. 1 year
Explanation: Today the 5 original members total 5 × 28 = 140 years. The 6 members total 6 × 23.5 = 141 years. Baby's age = 141 − 140 = 1 year.
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