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: 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 %
[EX A]: c

[EX Q]: Problem: what will be the difference between simple and compound interest at 16 % per annum on a sum of rs . 1000 after 4 years ? 
Options: a ) 164.19 , b ) 164.12 , c ) 170.6 , d ) 167.1 , e ) 165.11
[EX A]: c

[EX Q]: Problem: the simple interest on rs . 8 for 12 months at the rate of 5 paise per rupeeper month is 
Options: a ) 1.2 , b ) 4.8 , c ) 4.4 , d ) 3.21 , e ) none
[EX A]:
b