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


[Q]: Problem: a sum was put a simple interest at a certain rate for 2 years . had it been put at 4 % higher rate , it would have fetched rs . 60 more . the sum is : 
Options: a ) rs . 750 , b ) rs . 700 , c ) rs . 820 , d ) rs . 940 , e ) rs . 900
[A]: a


[Q]: Problem: after decreasing 50 % in the price of an article costs rs . 620 . find the actual cost of an article ? 
Options: a ) 1400 , b ) 1240 , c ) 1200 , d ) 1100 , e ) 1500
[A]:
b