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'.

Q: Problem: a certain article of clothing was discounted during a special sale to 2 / 5 of its original retail price . when the clothing did n ' t sell , it was discounted even further to 1 / 2 of its original retail price during a second sale . by what percent did the price of this article of clothing decrease from the first sale to the second sale ? 
Options: a ) 50 % , b ) 33.33 % , c ) 25 % , d ) 16.66 % , e ) 12.5 %

A: d
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Q: Problem: there are 100 employees in a room . 99 % are managers . how many managers must leave the room to bring down the percentage of manager to 98 % ? 
Options: a ) 1 , b ) 2 , c ) 50 , d ) 49 , e ) 97

A: c
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Q: Problem: if 50 % of 3 / 5 of a number is 36 , then the number is ? 
Options: a ) 120 , b ) 100 , c ) 75 , d ) 90 , e ) none of these

A:
a
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