P can complete a work in 12 days working 8 hours a day,Q can complete the same work in 8 days working 10 hours a day. If both P and Q work together, working 8 hours a day, in how many days can they complete the work?

P can complete a work in 12 days working 8 hours a day,Q can complete

1.	P can complete a work in 12 days working 8 hours a day,Q can complete the same work in 8 days working 10 hours a day. If both P and Q work together, working 8 hours a day, in how many days can they complete the work?
A.	5x6/11
B.	5x5/11
C.	6x6/11
D.	6x5/11
Answer» C. 6x6/11