If 30 men working 7 hours a day can do a piece of work in 18 days, in how many days will 21 men working 8 hours a day do the same work ?

If 30 men working 7 hours a day can do a piece of work in 18 days, in

1.	If 30 men working 7 hours a day can do a piece of work in 18 days, in how many days will 21 men working 8 hours a day do the same work ?
A.	20 1/2 days
B.	22 1/2 days
C.	24 1/2 days
D.	25 days
Answer» C. 24 1/2 days

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If 30 men working 7 hours a day can do a piece of work in 18 days, in how many days will 21 men working 8 hours a day do the same work ?

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