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: the population of a town is 10000 . it increases annually at the rate of 20 % p . a . what will be its population after 1 year ? 
Options: a ) 12300 , b ) 12350 , c ) 12000 , d ) 12500 , e ) 12600
[A]: c


[Q]: Problem: a car is purchased on hire - purchase . the cash price is $ 26 000 and the terms are a deposit of 10 % of the price , then the balance to be paid off over 60 equal monthly installments . interest is charged at 12 % p . a . what is the monthly installment ? 
Options: a ) $ 603 , b ) $ 624 , c ) $ 625 , d ) $ 626 , e ) $ 627
[A]: b


[Q]: Problem: kelly has had 3 pay cuts in her salary in the past 6 months . if the first pay cut was 8 % , the second pay cut was 14 % and the third was 18 % . what will be the percentage decrease , if the salary is decreased in a single shot ? 
Options: a ) 35.9 % , b ) 34.12 % , c ) 32.12 % , d ) 35.12 % , e ) 31.12 %
[A]:
d