February 27, 2017

Homework Help: algebra

Posted by ann caples on Wednesday, December 1, 2010 at 3:45pm.

Sammy can complete a programming job in 8 hours if he works alone.
Marilyn can complete the same programming job in 12 hours if she works alone.
If Sammy and Marilyn work together, how many hours and minutes will they complete the job

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