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'.

Input: Consider Input: Problem: a sum of money at simple interest amounts to rs . 815 in 3 years and to rs . 865 in 4 years . the sum is : 
Options: a ) s . 665 , b ) s . 690 , c ) s . 698 , d ) s . 700 , e ) s . 720

Output: a


Input: Consider Input: Problem: if each edge of cube increased by 30 % , the percentage increase in 
Options: a ) 69 , b ) 72 , c ) 64 , d ) 61 , e ) 75

Output: a


Input: Consider Input: Problem: john makes $ 50 a week from his job . he earns a raise and now makes $ 70 a week . what is the % increase ? 
Options: a ) 16 % , b ) 16.66 % , c ) 18 % , d ) 21 % , e ) 40 %


Output: e