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. 5-5/11
B. 5-6/11
C. 6-5/11
D. 6-6/11
Answer: A.
Time and Work
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