Question

The ratio between the present ages of A and B is 2 : 3, respectively. If B is 4 years older than A, then what will be the ratio of ages of A and B after 4 years?
1. 3 : 4
2. 3 : 5
3. 4 : 3
4. None of the above

Answer 1

Correct Answer - Option 1 : 3 : 4

Given 

 Present age of A and B = 2 : 3

Calculation 

Let the ratio be x 

So, difference in ages of A and B = 4 

⇒ 3x - 2x = 4 

⇒ x = 4 

So, Age of A and B after 4 years 

Age of A = 2x + 4 = 12 

Age of B = 3x + 4 = 16

Ratio of Age of A and B after 4 years = 12 : 16 = 3 : 4 

∴ The correct answer is 3 : 4