Question

the average age of a husband, his wife and son 3 yrs ago was 27 yrs and that of his wife and son 5 yrs ago was 20 yrs. What is husband's present age

Answer 1

HOPE MY ANSWER WILL HELP YOU @_@
Sum of the present ages of husband, wife and child = (27 * 3 + 3 * 3) years = 90 years.

Sum of the present ages of wife and child = (20 * 2 + 5 * 2) years = 50 years.

Husband's present age = (90 - 50) years = 40 years

Answer 2

you have to let the present age of husband ,wife and son be x,y,&z years respectively..