P can do some work in 4 hours. Q and R together can finish it in 3 hours while P and R can do it in 2 hours. How long will Q take to complete it, if he works alone?

P can do some work in 4 hours. Q and R together can finish it in 3 hou

1.	P can do some work in 4 hours. Q and R together can finish it in 3 hours while P and R can do it in 2 hours. How long will Q take to complete it, if he works alone?
A.	8 hours
B.	10 hours
C.	12 hours
D.	15 hours
Answer» D. 15 hours

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P can do some work in 4 hours. Q and R together can finish it in 3 hours while P and R can do it in 2 hours. How long will Q take to complete it, if he works alone?

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