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'.

[Q]: Problem: a money lender finds that due to a fall in the annual rate of interest from 8 % to 7 2 / 7 % his yearly income diminishes by rs . 61.50 . his capital is
Options: a ) 22.378 , b ) 87.86 , c ) 246.0 , d ) 78.88 , e ) 127.71
[A]: b

[Q]: Problem: if 15 % of 40 is greater than 25 % of a number by 2 , the number is
Options: a ) 14 , b ) 16 , c ) 18 , d ) 20 , e ) 22
[A]: b

[Q]: Problem: boy sells a book for rs . 630 he gets a loss of 10 % , to gain 10 % , what should be the sp ?
Options: a ) 430 , b ) 450 , c ) 550 , d ) 770 , e ) 660
[A]:
d