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: in how many years rs 160 will produce the same interest at 8 % as rs . 500 produce in 4 years at 8 % 
Options: a ) 13 , b ) 13.5 , c ) 11.5 , d ) 12.5 , e ) 12
[A]: d


[Q]: Problem: difference of two numbers is 1760 . if 7.5 % of the number is 12.5 % of the other number , find the number ? 
Options: a ) 2640 , 1000 , b ) 3660 , 4400 , c ) 3000 , 4160 , d ) 2490 , 4150 , e ) 4660 , 3000
[A]:
b