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 shopkeeper sells his goods at cost price but uses a faulty meter that weighs 800 grams . find the profit percent . 
Options: a ) 20 , b ) 15 , c ) 25 , d ) 18 , e ) 19

SOLUTION: c

PROBLEM: Problem: ? % of 360 = 108.0 
Options: a ) 277 , b ) 36 , c ) 64 , d ) 72 , e ) 30

SOLUTION: e

PROBLEM: Problem: a man can row 36 kmph in still water . it takes him thrice as long to row up as to row down the river . find the rate of the stream ? 
Options: a ) 14 kmph , b ) 12 kmph , c ) 18 kmph , d ) 1 kmph , e ) none of these

SOLUTION:
c