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: the salaries of a and b together amount to $ 6000 . a spends 95 % of his salary and b , 85 % of his . if now , their savings are the same , what is a ' s salary ? 
Options: a ) $ 1000 , b ) $ 1250 , c ) $ 2500 , d ) $ 4500 , e ) $ 5200
[EX A]: d

[EX Q]: Problem: what percent of 120 are 90 ? 
Options: a ) 25 % , b ) 50 % , c ) 75 % , d ) 33 % , e ) 30 %
[EX A]: c

[EX Q]: Problem: what was the principal , if at 12 % per annum the interest after 3 years amounted to rs . 5888 less than the sum lent ? 
Options: a ) 9000 , b ) 3000 , c ) 5000 , d ) 1300 , e ) 9200
[EX A]:
e