If 9 men working 71/2 hours a day can finish a piece of work in 20 day – McqOptions

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1.	If 9 men working 71/2 hours a day can finish a piece of work in 20 days, then how many days will be taken by 12 men, working 6 hours a day to finish the work? It is being given that 2 men oflatter type work as much as 3 men of the former type?
A.	91/2
B.	11
C.	121/2
D.	13
Answer» D. 13

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