9 examiners can examine a certain number of answer books in 12 days by – McqOptions

MCQOPTIONS

1.	9 examiners can examine a certain number of answer books in 12 days by working 5 hours in a day. How many hours in a day should 4 examiners work to examine twice the number of answer books in 30 days?
A.	9
B.	10
C.	11
D.	12
Answer» B. 10

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