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: a sum fetched a total simple interest of 4034.25 at the rate of 9 % . p . a . in 5 years . what is the sum ? 
Options: a ) 5768 , b ) 8925 , c ) 8965 , d ) 6474 , e ) 8723
[A]: c


[Q]: Problem: a total of $ 20,000 was invested in two certificates of deposit at simple annual interest rates of 4 percent and 8 percent , respectively . if the total interest on the two certificates was $ 1,440 at the end of one year , what fractional part of the $ 20.000 was invested at the higher rate ? 
Options: a ) 3 / 8 , b ) 4 / 5 , c ) 1 / 2 , d ) 3 / 5 , e ) 3 / 4
[A]: b


[Q]: Problem: if a town of 75,000 people is growing at a rate of approx . 1 % per year , the population of the town in 5 years will be closest to ? 
Options: a ) a . 76000 , b ) b . 77000 , c ) c . 78000 , d ) d . 79000 , e ) e . 80000
[A]:
a