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: a trader mixes 80 kg of tea at 15 per kg with 20 kg of tea at cost price of 20 per kg . in order to earn a profit of 50 % , what should be the sale price of the mixed tea ? 
Options: a ) 23.75 , b ) 22 , c ) 20 , d ) 19.2 , e ) none of these
[EX A]: e

[EX Q]: Problem: what annual installment will discharge a debt of rs . 1428 due in 3 years at 12 % simple interest ? 
Options: a ) 315 , b ) 345 , c ) 425 , d ) 335 , e ) none of them
[EX A]: c

[EX Q]: Problem: in town x , 64 percent of the population are employed , and 38 percent of the population are employed males . what percent of the employed people in town x are females ? 
Options: a ) 16 % , b ) 25 % , c ) 32 % , d ) 40 % , e ) 52 %
[EX A]:
d