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'.

[EX Q]: Problem: if the difference between compound interest ( interest compounded yearly ) and simple interest on a sum for 3 years at 20 % p . a . is rs . 132 , then the sum is 
Options: a ) rs . 3500 , b ) rs . 1500 , c ) rs . 2500 , d ) rs . 3000 , e ) none
[EX A]: e

[EX Q]: Problem: a 4 % stock yield 5 % . the market value of the stock is ? 
Options: a ) rs . 125 , b ) rs . 80 , c ) rs . 99 , d ) rs . 109 , e ) rs . 101
[EX A]: b

[EX Q]: Problem: find the simple interest on rs . 72,000 at 16 2 / 3 % per year for 9 months . 
Options: a ) 7500 , b ) 6500 , c ) 9000 , d ) 9500 , e ) none of them
[EX A]:
c