X does half as much work as Yand Z does half as much work as X and Y together. If Z alone can finish thework in 120 days, then together ,all will finish the work in ?

X does half as much work as Yand Z does half as much work as X and Y t

1.	X does half as much work as Yand Z does half as much work as X and Y together. If Z alone can finish thework in 120 days, then together ,all will finish the work in ?
A.	20
B.	30
C.	40
D.	50
Answer» D. 50

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X does half as much work as Yand Z does half as much work as X and Y together. If Z alone can finish thework in 120 days, then together ,all will finish the work in ?

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