If A can do a work in 10 days and B can do the same work in 15 days, then how many days will they take to complete the work both while working together?

If A can do a work in 10 days and B can do the same work in 15 days, t

1.	If A can do a work in 10 days and B can do the same work in 15 days, then how many days will they take to complete the work both while working together?
A.	7
B.	8
C.	6
D.	9
Answer» D. 9

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If A can do a work in 10 days and B can do the same work in 15 days, then how many days will they take to complete the work both while working together?

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