The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is:
Answer & explanation
Correct answer: option 1
3 years ago, The average of the husband, the wife and the child was 27 years .
So today the average of their ages is = 27 + 3 = 30 years.
Sum of the present age of husband , wife and child is = 30 × 3 = 90 years
5 years ago, The average of the wife and the child was 20 years.
So today the average of their ages is 20 + 5 = 25 years.
Sum of the ages of wife and child = 25 × 2 = 50 years
The husband’s age, now = 90–50= 40 years.