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: on a certain transatlantic crossing , 40 percent of a ship ’ s passengers held round - trip tickets and also took their cars abroad the ship . if 20 percent of the passengers with round - trip tickets did not take their cars abroad the ship , what percent of the ship ’ s passengers held round - trip tickets ? 
Options: a ) 20 % , b ) 40 % , c ) 50 % , d ) 60 % , e ) 80 %
[A]: c


[Q]: Problem: a man took loan from a bank at the rate of 12 % p . a . s . i . after 10 years he had to pay rs . 1500 interest only for the period . the principal amount borrowed by him was ? 
Options: a ) 1502 , b ) 1900 , c ) 1250 , d ) 1750 , e ) 2000
[A]: c


[Q]: Problem: if each side of a square is increased by 20 % , find the percentage change in its area ? 
Options: a ) 40 % , b ) 42 % , c ) 46 % , d ) 44 % , e ) 38 %
[A]:
d