instruction:
In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
question:
Problem: the tax on a commodity is diminished by 30 % but its consumption is increased by 15 % . find the decrease percent in the revenue derived from it ?
Options: a ) 20 % , b ) 18 % , c ) 15 % , d ) 12 % , e ) 14 %
answer:
a

question:
Problem: if x ^ 2 + y ^ 2 = 15 and xy = 3 , then ( x y ) ^ 2 =
Options: a ) 8 , b ) 9 , c ) 14 , d ) 17 , e ) 20
answer:
b

question:
Problem: if m and n are positive integer , and 1800 m = n ^ 3 , what is the least possible value of m ?
Options: a ) 2 , b ) 3 , c ) 15 , d ) 30 , e ) 45
answer:
c