P and Q can complete a work in 12 days, Q and R in 15 days, R and P in 20 days. In how many days can they work together?A. 10B. 12C. 5D. 14

P and Q can complete a work in 12 days, Q and R in 15 days, R and P in

1.	P and Q can complete a work in 12 days, Q and R in 15 days, R and P in 20 days. In how many days can they work together?A. 10B. 12C. 5D. 14
A.	B
B.	C
C.	D
D.	A
Answer» E.

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P and Q can complete a work in 12 days, Q and R in 15 days, R and P in 20 days. In how many days can they work together?A. 10B. 12C. 5D. 14

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