Question

Robert’s father is 4 times as old as Robert. After 5 years, father will be three
times as old as Robert. Find their present ages

Answer 1

Let Robert be a years old.

His father is 4a years old.

Now,

4a+5=3(a+5)

4a+5=3a+15

a=10

Thus, Robert's age= 10 years

His father's age= 40 years

Answer 2

it is the answer for this question