The task is to generate the correct answer for a given math problem.

[Q]: Problem: what is 82 % of 3 / 5 ?
[A]: 0.492


[Q]: Problem: a student chose a number , multiplied it by 2 , then subtracted 138 from the result and got 102 . what was the number he chose ?
[A]: 120


[Q]: Problem: if shares of two persons in profits are rs . 1600 and rs . 1200 then ratio of their capitals is
[A]:
4 : 3