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: 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: an agent , gets a commission of 2.5 % on the sales of cloth . if on a certain day , he gets rs . 21 as commission , the cloth sold through him on that day is worth
Options: a ) 333 , b ) 500 , c ) 840 , d ) 299 , e ) 132

Answer: c

Question: Problem: on a purchase of $ 130 , a store offered a payment plan consisting of a $ 30 down payment and 12 monthly payments of $ 10 each . what percent of the purchase price , to the nearest tenth of a percent , did the customer pay in interest by using this plan ?
Options: a ) 23.5 % , b ) 24.5 % , c ) 23.1 % , d ) 25.5 % , e ) 26.5 %

Answer:
c