The ratio between the present ages of P and Q is 5:7. If Q is 4 years old than P, what will be the ratio of the ages of P and Q after 4 years?
Choose the correct choice from the following.
A) A)3:4
B) B)8:9
C) C)4:3
D) inadequate
E) of these
Let P's age and Q's age be 5x and 7x years respectively.   Then, 7x - 5x = 4 =&gt; x = 2   Required ratio = (6x + 4) : (7x + 4)   16 : 18= 8:9   ANSWER:8:9
<result>B</result>
The ratio between the present ages of P and Q is 5:7. If Q is 4 years old than P, what will be the ratio of the ages of P and Q after 4 years?