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: in a school of 850 boys , 40 % of muslims , 28 % hindus , 10 % sikhs and the remaining of other communities . how many belonged to the other communities ? 
Options: a ) a ) 125 , b ) b ) 627 , c ) c ) 187 , d ) d ) 721 , e ) e ) 159
[EX A]: c

[EX Q]: Problem: a reduction of 50 % in the price of apples would enable a man to obtain 50 more for rs . 50 , what is reduced price per dozen ? 
Options: a ) 1 , b ) 3 , c ) 6 , d ) 7 , e ) 10
[EX A]: c

[EX Q]: Problem: boy sells a book for rs . 800 he gets a loss of 20 % , to gain 10 % , what should be the sp ? 
Options: a ) 1100 , b ) 450 , c ) 550 , d ) 590 , e ) 600
[EX A]:
a