instruction:
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'.
question:
Problem: what is 120 % of 13 / 24 of 840 ? 
Options: a ) 436 , b ) 478 , c ) 512 , d ) 546 , e ) 620
answer:
d


question:
Problem: what is the rate percent when the simple interest on rs . 4000 amount to rs . 320 in 2 years ? 
Options: a ) 4 % , b ) 4.1 % , c ) 4.2 % , d ) 4.3 % , e ) 4.5 %
answer:
a


question:
Problem: what is the rate percent when the simple interest on rs . 800 amount to rs . 160 in 4 years ? 
Options: a ) 5 % , b ) 7 % , c ) 9 % , d ) 2 % , e ) 4 %
answer:

a