Mathematics, 23.09.2021 14:00 frisha
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 16 hr. Find the time it would take each machine, working alone, 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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