Question

Average age of 3 brother is 10 yr. If the age of father and mother is also considered,the average increase by 13yr . if the father is 5 yr elder to the mother,what is age (in yrs) of the father?

Answer 1

3 *10=30

5*23=115

115-30=85

X+X+5=85

X=40

Father's age =45