P works twice as fast as Q. Q alone can complete some work in 12 days. Working together,how long will P and Q take to complete the work?

P works twice as fast as Q. Q alone can complete some work in 12 days.

1.	P works twice as fast as Q. Q alone can complete some work in 12 days. Working together,how long will P and Q take to complete the work?
A.	8 days
B.	4 days
C.	6 days
D.	10 days
Answer» C. 6 days

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P works twice as fast as Q. Q alone can complete some work in 12 days. Working together,how long will P and Q take to complete the work?

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