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'.

[Q]: Problem: by selling an article at rs . 1000 , a shopkeeper makes a profit of 25 % . at what price should he sell the article so as to make a loss of 25 % ? 
Options: a ) s . 600 , b ) s . 480 , c ) s . 500 , d ) s . 450 , e ) s . 550
[A]: a


[Q]: Problem: what annual installment will discharge a debt of rs . 1092 due in 3 years at 12 % simple interest ? 
Options: a ) 442 , b ) 441 , c ) 440 , d ) 320 , e ) 532
[A]: a


[Q]: Problem: a furniture dealer purchased a desk for $ 150 and then set the selling price equal to the purchase price plus a markup that was 25 % of the selling price . if the dealer sold the desk at the selling price , what was the amount of the dealer ' s gross profit from the purchase and the sale of the desk ? 
Options: a ) 40 % , b ) 38 % , c ) 36 % , d ) 33.33 % , e ) 35 %
[A]:
d