The ratio between the present ages of A and B is 5:3 respectively. The ratio between A's age 4 years ago and B's age 4 years hence is 1:1. What is the ratio between A's age 4 years hence and B's age 4 years ago?	Choose the correct choice from the following answers
A) 3:4
B) 3:0
C) 3:1
D) 3:2
E) 3:7
Let the present ages of A and B be 5x and 3x years respectively.   Then, (5x - 4)/(3x + 4) = 1/1   2x = 8 =&gt; x = 4   Required ratio = (5x + 4):(3x - 4) = 24:8 = 3:1.Answer: 3:1
<result>C</result>
The ratio between the present ages of A and B is 5:3 respectively. The ratio between A's age 4 years ago and B's age 4 years hence is 1:1. What is the ratio between A's age 4 years hence and B's age 4 years ago?