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If 9 men working 7 1/2 hours a day can f...

If 9 men working `7 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. `11` b. `13` c. `9 1/2` d. `12 1/2`

A

12.5

B

13

C

9.5

D

11

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The correct Answer is:
A
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