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 present population of a town is 200 . population increase rate is 10 % p . a . find the population of town after 1 years ?
Options: a ) 100 , b ) 120 , c ) 200 , d ) 220 , e ) 250
[A]: d

[Q]: Problem: at what rate percent per annum will the simple interest on a sum of money be 2 / 5 of the amount in 10 years ?
Options: a ) 4 % , b ) 74 % , c ) 64 % , d ) 74 % , e ) 94 %
[A]: a

[Q]: Problem: p and q invested in a shop . the profits were divided in the ratio of 2 : 3 respectively . if p invested rs . 40,000 , the amount invested by q is :
Options: a ) 35000 , b ) 40000 , c ) 50000 , d ) 60000 , e ) none
[A]:
d