Mike, Joe, and Bill are painting a fence. The painting can be finished if Mike and Joe work together for 4 hoursand Bill works alone for 2hours; or if Mike and Joe work together for 2 hours and Bill works alone for 5hours; or if Mike works alone for 6hours, Joe works alone for 2hours, and Bill works alone for 1 hour.

How much time does it take for each man working alone to complete thepainting?

A. Mike: 8hr; Joe: 16hr; Bill: 8 hr B. Mike: 12hr; Joe: 10hr; Bill: 10 hr C. Mike: 8hr; Joe: 8hr; Bill: 16 hr D. Mike: 16hr; Joe: 8hr; Bill: 8 hr