A contractor undertakes to do a piece of work in 36 days and employs 15 men to work 9 hours a day, but after 24 days, he finds that only \[\frac{\mathbf{3}}{\mathbf{5}}\]th of the work is finished. He then employ 3 more men For how many hours a day should all the men now work together to finish the work in time.

A contractor undertakes to do a piece of work in 36 days and employs 1

1.	A contractor undertakes to do a piece of work in 36 days and employs 15 men to work 9 hours a day, but after 24 days, he finds that only \[\frac{\mathbf{3}}{\mathbf{5}}\]th of the work is finished. He then employ 3 more men For how many hours a day should all the men now work together to finish the work in time.
A.	9 hours
B.	10 hours
C.	11 hours
D.	\[9\frac{1}{2}\]
E.	None of these
Answer» C. 11 hours

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