X, Y and Z can complete a work in 15, 45 and 90 days respectively. In – McqOptions

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1.	X, Y and Z can complete a work in 15, 45 and 90 days respectively. In how many days X, Y and Z together can complete the same work?
A.	12
B.	11
C.	9
D.	10
Answer» E.

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