The ratio between the present ages of P and Q is 6 : 7 If Q is 4 years older than P. what will be the ratio of the ages of P and Q after 4 years?

A 3: 4

B 3 : 5

C 4 : 3

D None of these

Correct Answer: Option D

Let P age and Q age is 6x years and 7x years. Then 7x - 6x = 4 <=> x = 4 So required ratio will be (6x+4): (7x+4) => 28:32 => 7:8