The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the ...
The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 10 years ago was 20 years. The present age of the husband is:
Answer/Solution
30 years
Steps/Work
D
30 years
Sum of the present ages of husband, wife and child = (27 x 3 + 3 x 3) years = 90 years.
Sum of the present ages of wife and child = (20 x 2 + 10 x 2) years = 60 years.
Husband's present age = (90 - 60) years = 30 years.
30 years
Sum of the present ages of husband, wife and child = (27 x 3 + 3 x 3) years = 90 years.
Sum of the present ages of wife and child = (20 x 2 + 10 x 2) years = 60 years.
Husband's present age = (90 - 60) years = 30 years.