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 one:
A) 60/11 B) 60/12 C) 60/18 D) 60/16 E) 65/16
Explanation:   P can complete the work in (12 * 8)= 
<gadget id="calculator">(12 * 8)</gadget>
<output>96</output>
96 hrs   Q can complete the work in  (8 * 10)= 
<gadget id="calculator"> (8 * 10)</gadget>
<output>80</output>
80 hrs   \inline {\color{Black}\therefore } P's 1 hour work=1/96 and Q's 1 hour work= 1/80   (P+Q)'s 1 hour's work =\inline {\color{Black} \left ( \frac{1}{96}+\frac{1}{80} \right )} =\inline {\color{Black} \frac{11}{480}}   so both P and Q will finish the work in \inline {\color{Black} \frac{480}{11}} hrs   \inline {\color{Black} \therefore } Number of days of 8 hours each = \inline {\color{Black} \left ( \frac{480}{11} \times \frac{1}{8}\right )=\frac{60}{11}}   60/11nswer: 60/11) 60/11
<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?