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 man took a loan at rate of 12 % per annum simple interest . after 3 years he had to pay 5400 interest . the principal amount borrowed by him was . 
Options: a ) rs 14000 , b ) rs 15000 , c ) rs 16000 , d ) rs 17000 , e ) none of these

A: b
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Q: Problem: if each edge of cube increased by 10 % , the percentage increase in 
Options: a ) 21 , b ) 22 , c ) 25 , d ) 19 , e ) 15

A: a
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Q: Problem: if the selling price of 50 articles is equal to the cost price of 25 articles , then the loss or gain percent is : 
Options: a ) 45 % , b ) 23 % , c ) 20 % , d ) 60 % , e ) 50 %

A:
e
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