P is three times as fast as Q and working together, they can complete a work in 12 days. In how many days can Q alone complete the work?

P is three times as fast as Q and working together, they can comple

1.	P is three times as fast as Q and working together, they can complete a work in 12 days. In how many days can Q alone complete the work?
A.	16 days
B.	20 days
C.	17 days
D.	12 days
Answer» B. 20 days

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P is three times as fast as Q and working together, they can complete a work in 12 days. In how many days can Q alone complete the work?

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