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 man can row his boat with the stream at 18 km / h and against the stream in 8 km / h . the man ' s rate is ? 
Options: a ) 5 kmph , b ) 2 kmph , c ) 7 kmph , d ) 8 kmph , e ) 3 kmph

SOLUTION: a

PROBLEM: Problem: jackie has two solutions that are 2 percent sulfuric acid and 12 percent sulfuric acid by volume , respectively . if these solutions are mixed in appropriate quantities to produce 60 liters of a solution that is 10 percent sulfuric acid , approximately how many liters of the 12 percent solution will be required ? 
Options: a ) 18 , b ) 20 , c ) 48 , d ) 36 , e ) 42

SOLUTION: c

PROBLEM: Problem: the difference between simple and compound interests on a certain sum for 2 years at 4 % per annum is rs . 50 . the sum is 
Options: a ) rs . 20,400 , b ) rs . 25,000 , c ) rs . 31,250 , d ) rs . 38,000 , e ) rs . 48,000

SOLUTION:
c