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Mathematics, 04.03.2020 05:39 momomo4

A new photocopier works 2 times as fast as an old one. When the machines work together, a university can produce all its staff manuals in 24hr. Find the time it would take each machine working to complete the job

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A new photocopier works 2 times as fast as an old one. When the machines work together, a university...

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