U, V and W together can make a chair in 20 minutes. U and V together can make it in 25 minutes. How much time will (in minutes) W alone take to make the chair?_x005F_x000D_

U, V and W together can make a chair in 20 minutes. U and V together c

1.	U, V and W together can make a chair in 20 minutes. U and V together can make it in 25 minutes. How much time will (in minutes) W alone take to make the chair?_x005F_x000D_
A.	100_x005F_x000D_
B.	90
C.	60
D.	120
Answer» B. 90

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U, V and W together can make a chair in 20 minutes. U and V together can make it in 25 minutes. How much time will (in minutes) W alone take to make the chair?_x005F_x000D_

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