The ratio of the present ages of A to B is 5 3 The ratio of A rsquo s age 4 years ago to B rsquo s a......

The ratio of the present ages of A to B is 5 : 3. The ratio of A’s age 4 years ago to B’s age 4 years hence is 1 : 1. What is the ratio of A’s age 4 years hence to B’s age 4 years ago? 

Let A’s present age = 5x, and B’s = 3x
Ratio of A’s age 4 years ago to B’s age 4 years hence is 1 : 1. So
(5x-4)/(3x+4) = 1/1
Solve x = 4
So A’s present age = 20, and B’s = 12
Required ratio = (20+4) : (12-4) = 3:1

By: Manpreet kaur