Solve.Mike, Joe, and Bill are painting a fence. The painting can be finished if Mike and Joe work together for 4 hours and Bill works alone for 2 hours or if Mike and Joe work together for 2 hours and Bill works alone for 5 hours, or if Mike works alone for 6 hours, Joe works alone for 2 hours, and Bill works alone for 1 hour. How much time does it take for each man working alone to complete the painting?
A. Mike 8 hr, Joe 8 hr, Bill 16 hr
B. Mike 16 hr, Joe 8 hr, Bill 8 hr
C. Mike 12 hr, Joe 10 hr, Bill 10 hr
D. Mike 8 hr, Joe 16 hr, Bill 8 hr
Answer: D
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