TASK DEFINITION: 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'.
PROBLEM: 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

SOLUTION: d

PROBLEM: Problem: a sum of money at simple interest amounts to rs . 415 in 2 years and to rs . 514 in 4 years . the sum is ? 
Options: a ) rs . 316 , b ) rs . 251 , c ) rs . 154 , d ) rs . 294 , e ) rs . 200

SOLUTION: a

PROBLEM: Problem: the compound interest on $ 30,000 at 7 % per annum is $ 4347 . the period ( in years ) is : 
Options: a ) 2 , b ) 2 1 / 2 , c ) 3 , d ) 4 , e ) 5

SOLUTION:
a