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'.

Problem: what will be the difference between simple and compound interest @ 20 % per annum on a sum of $ 500 after 2 years ? 
Options: a ) $ 10 , b ) $ 20 , c ) $ 25 , d ) $ 30 , e ) $ 40
b

Problem: there were two candidates in an election . winner candidate received 58 % of votes and won the election by 288 votes . find the number of votes casted to the winning candidate ? 
Options: a ) 776 , b ) 1044 , c ) 299 , d ) 257 , e ) 125
b

Problem: find compound interest on rs . 7500 at 4 % per year for 2 years , compounded annually . 
Options: a ) 812 , b ) 712 , c ) 412 , d ) 512 , e ) 612

e