A man is 3 times faster than a woman to finish a certain piece of work. If a woman can finish the work in 20 minutes, then how long will it take to finish the work if both man and woman start working together?

A man is 3 times faster than a woman to finish a certain piece of work

1.	A man is 3 times faster than a woman to finish a certain piece of work. If a woman can finish the work in 20 minutes, then how long will it take to finish the work if both man and woman start working together?
A.	8 minutes
B.	5 minutes
C.	10 minutes
D.	Can't be determined
E.	None of these
Answer» C. 10 minutes

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A man is 3 times faster than a woman to finish a certain piece of work. If a woman can finish the work in 20 minutes, then how long will it take to finish the work if both man and woman start working together?

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