the ratio between the present age of p and q is 6 : 7 . if q is 4 years old than p , what will be the ratio of the ages of p and q after 4 years ?
let p and q ' s age is 6 x and 7 x years respectively . 7 x - 6 x = 4 x = 4 required ratio = ( 6 x + 4 ) : ( 7 x + 4 ) = 28 : 32 = 7 : 8 option a is answer
divide(add(4, add(4, divide(multiply(6, 4), subtract(7, 6)))), add(4, divide(multiply(6, 4), subtract(7, 6))))