Galaxie85111
Galaxie85111
06.05.2020 • 
Mathematics

An office has an old copy machine and a new one. Working together, it takes both machines 6 hours to make all the copies of the annual Financial report. Working alone, it takes the old copy machine 5 hours longer than the new one to make all the copies of the report. How long will it take would it take the new copying machine to make all the copies working alone?

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