Question

Father is 3 times as old as his son. The difference between their ages is 30 years. Find their ages

Answer 1

let son's age be x
father's age = 30+x
so,
3x = 30+x
3x-x = 30
2x = 30
x = 30/2
x = 15
so,
son's age = 15
father's age = 45