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'.
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Question: Problem: if each year the population of the country grows by 40 % , how many years will elapse before the population of the country doubles ? 
Options: a ) 3 , b ) 4 , c ) 5 , d ) 6 , e ) 7

Answer: a


Question: Problem: a number increased by 20 % gives 480 . the number is ? 
Options: a ) 200 , b ) 300 , c ) 400 , d ) 500 , e ) 600

Answer: c


Question: Problem: a hostel had provisions for 250 men for 32 days . if 50 men left the hostel , how long will the food last at the same rate ? 
Options: a ) 30 , b ) 40 , c ) 50 , d ) 60 , e ) 65

Answer:
b