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Mathematics, 06.10.2019 15:30 aprilstalder
One machine can complete a job in 10 minutes. if the same job is done by this machine and an older machine working together, the job can be completed in 6 minutes. how long would it take the older machine to do the job alone?
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One machine can complete a job in 10 minutes. if the same job is done by this machine and an older m...
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