Question

Ravi was three times as old as Raju. Ten years later, Ravi would be twice as old as Raju. How old
are they now?​

Answer 1

Let Raju's age be x years

So Ravi's age = 3x years

After 10 years

Raju's age = x + 10 years

Ravi's age = 3x + 10 years

Given,

Ten years later, Ravi would be twice as old as Raju

So

2 (x + 10) = 3x + 10

2x + 20 = 3x + 10

x = 10

So

Raju's age = x = 10 years

Ravi's age = x + 10 = 20 years