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 man buys an article for $ 10 . and sells it for $ 30 . find the gain percent ? 
Options: a ) 25 % , b ) 50 % , c ) 20 % , d ) 150 % , e ) 300 %

Output: e


Input: Consider Input: Problem: john makes $ 60 a week from his job . he earns a raise and nowmakes $ 70 a week . what is the % increase ? 
Options: a ) 16 % , b ) 16.66 % , c ) 17 % , d ) 17.2 % , e ) 18 %

Output: b


Input: Consider Input: Problem: consider a lady took a loan from a bank at the rate of 12 % p . a . simple interest . after 3 years she had to pay rs . 7200 interest only for the period . the principal amount borrowed by her was 
Options: a ) rs . 2000 , b ) rs . 10000 , c ) rs . 15000 , d ) rs . 20000 , e ) none of these


Output: d