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'.

[EX Q]: Problem: a certain company reported that the revenue on sales increased 15 % from 2000 to 2003 , and increased 30 % from 2000 to 2005 . what was the approximate percent increase in revenue for this store from 2003 to 2005 ? 
Options: a ) 50 % , b ) 40 % , c ) 35 % , d ) 32 % , e ) 13 %
[EX A]: e

[EX Q]: Problem: company p had 15 percent more employees in december than it had in january . if company p had 480 employees in december , how many employees did it have in january ? 
Options: a ) 391 , b ) 417 , c ) 410 , d ) 423 , e ) 445
[EX A]: b

[EX Q]: Problem: jerry went to a shop and bought things worth rs . 25 , out of which 30 $ went on sales tax on taxable purchases . if the tax rate was 6 % , then what was the cost of the tax free items ? 
Options: a ) 19 , b ) 19.7 , c ) 21.3 , d ) 21.5 , e ) 21.7
[EX A]:
b