Banking Reasoning Sample Paper Reasoning Sample Paper-11

The ratio between the present ages of A and B is 5 : 3, respectively. The ratio between A's age 4yr ago and B's age 4yr hence is 1 : 1.

What is the ratio between A's age 4yr hence and B's age 4yr ago?

A) \[1:3\]

B) \[2:1\]

C) \[3:1\]

D) \[4:1\]

Correct Answer: C

Solution :

[c] Let the present ages of A and B be 5x yr and 3x yr, respectively.

Now, according to the question, \[\frac{5x-4}{3x+4}=\frac{1}{1}\]

\[\Rightarrow \]\[5x-4=3x+4\]

\[\Rightarrow \]\[2x=8\]

\[\Rightarrow \]\[x=4\,\,yr\]

Now, required ratio \[=\frac{(5\times 4+4)}{(3\times 4-4)}=\frac{24}{8}=3:1\]