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: the market value of a certain machine decreased by 10 percent of its purchase price each year . if the machine was purchased in 1982 for its market value of $ 8000 , what was its market value two years later ? 
Options: a ) $ 8,000 , b ) $ 5,600 , c ) $ 3,200 , d ) $ 6,400 , e ) $ 800
answer:
d


question:
Problem: rs 50000 is divided into two parts one part is given to a person with 10 % interest and another part is given to a person with 20 % interest . at the end of first year he gets profit 8000 find money given by 10 % ? 
Options: a ) 20000 , b ) 40000 , c ) 50000 , d ) 60000 , e ) 70000
answer:
a


question:
Problem: the difference between compound interest and simple interest on a certain amount of money at 5 % per annum for 2 years is 16 . find the sum : 
Options: a ) 4500 , b ) 7500 , c ) 5000 , d ) 6400 , e ) none of these
answer:

d