In this task, you need to answer the given multiple-choice question on the gain. Gain is the value by which to multiply the input. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

[Q]: Problem: if difference between compound interest and simple interest on a sum at 10 % p . a . for 2 years is rs . 150 then sum is 
Options: a ) s . 15000 , b ) s . 15100 , c ) s . 15800 , d ) s . 16000 , e ) s . 16200
[A]: a


[Q]: Problem: 30 is what percent of 100 ? 
Options: a ) 35 % , b ) 30 % , c ) 45 % , d ) 50 % , e ) 55 %
[A]: b


[Q]: Problem: find compound interest on rs . 8000 at 15 % per annum for 2 years 4 months , compounded annually . 
Options: a ) rs 400 , b ) rs 300 , c ) rs 3109 , d ) rs 250 , e ) rs 400
[A]:
c