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?  Choose the correct option
A) 5 5/11	B) 5 6/11	C) 6 5/11	D) 6 6/11	E) 5 4/11
P can complete the work in (12 x 8) hrs. = 96 hrs.   Q can complete the work in (8 x 10) hrs. = 80 hrs.   Work done by P's per hour =1/96   Work done by Q's per hour =1/80   P and Q work together per hour=1/96 + 1/80=11/480   Both P and Q will finish the work in 480/11 hrs   Number of days of 8 hours each =480/11 x 1/8=60/11 days=5 5/11 days   5 5/11
<result>A</result>
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?