In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
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Question: Problem: if 45 - [ 28 - { 37 - ( 15 - * ) } ] = 59 , then * is equal to : 
Options: a ) - 29 , b ) - 19 , c ) 20 , d ) 29 , e ) 39

Answer: c


Question: Problem: when 1 / 20 % of 4,000 is subtracted from 1 / 10 of 4,000 , the difference is 
Options: a ) 50 , b ) 200 , c ) 380 , d ) 398 , e ) 400

Answer: d


Question: Problem: a is two years older than b who is twice as old as c . if the total of the ages of a , b and c be 32 , then how old is b ? 
Options: a ) 17 years , b ) 19 years , c ) 29 years , d ) 10 years , e ) 12 years

Answer:
e