The ratio of the age of Ram and Rahim 10 years ago was 1

The ratio of the age of Ram and Rahim 10 years ago was 1 : 3. The ratio of their age five years hence will be 2 : 3. Then the ratio of their present age is

Let the age of Ram and Rahim 10 years ago be x and 3x years respectively.
After 5 years from now,

x + 15	=	2
3x + 15	=	3

⇒ 6x + 30 = 3x + 45
⇒ 3x = 45 – 30 = 15
∴ Ratio of their present age
= (x + 10) : (3x + 10)
= 15 : 25 = 3 : 5