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: 90 students represent x percent of the boys at jones elementary school . if the boys at jones elementary make up 50 % of the total school population of x students , what is x ? 
Options: a ) 134 , b ) 150 , c ) 225 , d ) 250 , e ) 500
[EX A]: a

[EX Q]: Problem: john makes $ 60 a week from his job . he earns a raise and now makes $ 110 a week . what is the % increase ? 
Options: a ) 16 % , b ) 83.33 % , c ) 17 % , d ) 17.61 % , e ) 17.56 %
[EX A]: b

[EX Q]: Problem: john makes $ 60 a week from his job . he earns a raise andnow makes $ 75 a week . what is the % increase ? 
Options: a ) 16.12 % , b ) 25 % , c ) 16.56 % , d ) 17.66 % , e ) 18.1 %
[EX A]:
b