Question

The present age of Pratik and Arjun are in the ratio 2:3. After 4 years, the ratio of their ages will be 4:5. Pratik's present age is _____ years.

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Answer 1

Let the present age of Pratik be 2x and Arjun be 3x.

4 years from now, Pratik 's age = 2x + 4 and Arjun 's age = 3x + 4

$\frac{2x+4}{3x+4}$ = $\frac{4}{5}$

10x + 20 = 12x + 16

2x = 4, x = 2

Pratik's present age is 2x = 4.