A can do a piece of work in 10 days and B can do it in 15 days. Number of days to complete the work if they work together is:

A can do a piece of work in 10 days and B can do it in 15 days. Number

1.	A can do a piece of work in 10 days and B can do it in 15 days. Number of days to complete the work if they work together is:
A.	6 days
B.	9 days
C.	7 days
D.	5 days
Answer» B. 9 days

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A can do a piece of work in 10 days and B can do it in 15 days. Number of days to complete the work if they work together is:

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