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: in country z , 10 % of the people do not have a university diploma but have the job of their choice , and 30 % of the people who do not have the job of their choice have a university diploma . if 40 % of the people have the job of their choice , what percent of the people have a university diploma ? 
Options: a ) 35 % , b ) 48 % , c ) 55 % , d ) 65 % , e ) 75 %
[EX A]: b

[EX Q]: Problem: the cost price of a radio is rs . 4800 and it was sold for rs . 4400 , find the loss % ? 
Options: a ) 8 , b ) 9 , c ) 7 , d ) 6 , e ) 4
[EX A]: a

[EX Q]: Problem: what is the rate percent when the simple interest on rs . 9100 amount to rs . 455 in 3 years ? 
Options: a ) 3.7 % , b ) 5.7 % , c ) 6.7 % , d ) 8.7 % , e ) 9.7 %
[EX A]:
a