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: calculate the dividend from moses ' s stock , if he invested rs . 3000 at 72 to obtain an income of rs . 210 . 
Options: a ) 3 , b ) 9 , c ) 3 , d ) 4 , e ) 5.04
[EX A]: e

[EX Q]: Problem: in a certain city , 70 percent of the registered voters are democrats and the rest are republicans . in a mayoral race , if 80 percent of the registered voters who are democrats and 30 percent of the registered voters who are republicans are expected to vote for candidate a , what percent of the registered voters are expected to vote for candidate a ? 
Options: a ) 65 % , b ) 52 % , c ) 85 % , d ) 69 % , e ) 75 %
[EX A]: a

[EX Q]: Problem: a shopkeeper sold an book offering a discount of 5 % and earned a profit of 25 % . what would have been the percentage of profit earned if no discount was offered ? 
Options: a ) 131.6 , b ) 120 , c ) 130 , d ) 110 , e ) 150
[EX A]:
a