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: 120 students represent x percent of the boys at a school . if the boys at the school make up 30 % of the total school population of x students , what is x ? 
Options: a ) 120 , b ) 150 , c ) 180 , d ) 200 , e ) 250
answer:
d


question:
Problem: 33 1 / 3 % of 360 ? 
Options: a ) 80 , b ) 90 , c ) 110 , d ) 120 , e ) 130
answer:
d


question:
Problem: find the simple interest on rs . 64,000 at 16 2 / 3 % per annum for 9 months . 
Options: a ) s . 8500 , b ) s . 8000 , c ) s . 7500 , d ) s . 7000 , e ) s . 6500
answer:

b