D can do a work in 18 days and E can do the same work in half that time. How many days will they take to finish the work, doing it together?

D can do a work in 18 days and E can do the same work in half that tim

1.	D can do a work in 18 days and E can do the same work in half that time. How many days will they take to finish the work, doing it together?
A.	5
B.	4
C.	7
D.	6
Answer» E.

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D can do a work in 18 days and E can do the same work in half that time. How many days will they take to finish the work, doing it together?

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