If 9 men working$${\text{7}}\frac{1}{2}$$ hours a day can finish a pie – McqOptions

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1.	If 9 men working$${\text{7}}\frac{1}{2}$$ 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 of latter type work as much as 3 men of the former type.)
A.	${\text{9}}\frac{1}{2}$$
B.	1
C.	${\text{12}}\frac{1}{2}$$
D.	3
Answer» D. 3

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