Question

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

• A. 5
• B. 10
• C. 15
• D. 20

Answer 1

The correct option is C

15

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

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

10x + 20 = 12x + 16

2x = 4, x = 2

Arjun's present age is 3x = 6.