The average age of husband, wife and their child 4 years ago was 25 years and that of wife and the child 6 years ago was 18 years. The present age of the husband is:
Answer & explanation
Correct answer: option 1
4 years ago, The average of the husband, the wife and the child was 25 years .
Sum of the age of husband , wife and child is = 25 × 3 = 75
Sum of the present age of husband , wife and child is = 25 × 3 + 12 = 87 years
6 years ago, The average of the wife and the child was 18 years.
Sum of the age of wife and child is = 18 × 2 = 36
Sum of the ages of wife and child = 18 × 2 + 12 = 48 years
The husband’s age, now = 87 –48 = 39 years.