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: 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 %
c

Problem: a trader bought a car at 5 % discount on its original price . he sold it at a 60 % increase on the price he bought it . what percent of profit did he make on the original price ?
Options: a ) 17 % , b ) 62 % , c ) 52 % , d ) 19 % , e ) 22 %
c

Problem: what is rate of interest if principal . amount be 400 , simple interest 140 and time 2 year .
Options: a ) 10 , b ) 17.5 , c ) 25 , d ) 12 , e ) 14.5
b