SOLUTION: Holly, James, and Mary work together to paint the outside of a barn. Holly can do the job alone in six hours. James or Mary can do the job alone in 12 hours. If all three work toge
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-> SOLUTION: Holly, James, and Mary work together to paint the outside of a barn. Holly can do the job alone in six hours. James or Mary can do the job alone in 12 hours. If all three work toge
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Question 1069206: Holly, James, and Mary work together to paint the outside of a barn. Holly can do the job alone in six hours. James or Mary can do the job alone in 12 hours. If all three work together, how many hours will it take them to complete the job? Answer by ikleyn(52754) (Show Source):
Holly makes of the job per hour.
James makes of the job per hour.
Mary makes of the job per hour.
Working together, they make = = = of the work per hour.
Answer. It will take 3 hour for the three to make the job working together.
