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: the average marks of a class of 30 students is 40 and that of another class of 50 students is 60 . find the average marks of all the students ?
Options: a ) 82.5 , b ) 52.9 , c ) 52.2 , d ) 52.5 , e ) 52.7

Answer: d

Question: Problem: when average age of 22 members are 0 , how many members greater than 0 ?
Options: a ) 17 , b ) 21 , c ) 22 , d ) 24 , e ) 25

Answer: b

Question: Problem: if the sales tax reduced from 3 1 / 2 % to 3 1 / 3 % , then what difference does it make to a person who purchases an article with market price of rs . 6600 ?
Options: a ) 11 , b ) 13 , c ) 14 , d ) 18 , e ) 10

Answer:
a