Answer with Explanation:

Let Ronit's present age be x years. Then, father's present age =(x + 3x) years = 4x years.

(4x + 8) = 5/2 (x + 8)

=> 8x + 16 = 5x + 40

=> 3x = 24

=> x = 8

Hence, required ratio = (4x + 16)/(x+16) = 48/24 = 2.