The average age of a husband and his wife was 20 years at the time of their marriage. After 6 years, they have a 2 -year old child. Find the present average age of the family.

Explanation

Given: The average age of a husband and his wife was 20 years at the time of their marriage. After 6 years, they have a 2 -year old child. Concept used: Average = Sum of elements/Number of elements Calculation: Total age at the time of their marriage = 20 × 2 ⇒ 40 years Total age of their now = 40 + 6 + 6 ⇒ 52 years Total age of the family = 52 + 2 = 54 years Average age = 54/3 ⇒ 18 years ∴ T he present average age of the family is 18 years.