TASK DEFINITION: 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'.
PROBLEM: Problem: a merchant sells an item at a 20 % discount , but still makes a gross profit of 20 percent of the cost . what percent p of the cost would the gross profit on the item have been if it had been sold without the discount ? 
Options: a ) 20 % , b ) 40 % , c ) 50 % , d ) 60 % , e ) 75 %

SOLUTION: c

PROBLEM: Problem: raman ' s salary was decreased by 50 % and subsequently increased by 50 % . how much percent does he loss . 
Options: a ) 75 , b ) 65 , c ) 45 , d ) 25 , e ) 85

SOLUTION: d

PROBLEM: Problem: the price of rice falls by 40 % . how much rice can be bought now with the money that was sufficient to buy 20 kg of rice previously ? 
Options: a ) 5 kg , b ) 15 kg , c ) 25 kg , d ) 30 kg , e ) none

SOLUTION:
e