SOLUTION: A printing press did a piece of work in 4 hours. When a second press was installed, both machines could complete the work in 2 and 1/2 hours. How many hours would it take for the
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Question 667015: A printing press did a piece of work in 4 hours. When a second press was installed, both machines could complete the work in 2 and 1/2 hours. How many hours would it take for the second press to do the job on its own? Answer by solver91311(24713) (Show Source):
