Question

If the father's age is equal to the age of his five children and after 15 years if the father's age is only half of his children's age find the father's age

Answer 1

let age of father=x yrs
sum of ages of 5 children=y yrs
x=y
x+15=1/2(y+15*5)
2(x+15)=y+75
2x+30=y+75
2x=x+45
x=45 yrs