X, Y and Z can separately do a work in 12, 15 and 20 days respectively – McqOptions

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1.	X, Y and Z can separately do a work in 12, 15 and 20 days respectively. They started to work together but Z left after 2 days. In how many days will the remaining work be completed by X and Y?
A.	2 days
B.	4 days
C.	5 days
D.	3 days
Answer» C. 5 days

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