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Mathematics, 26.10.2020 07:50 osmanysalvador9

It takes Leon 7 hours to seal his driveway working by himself. If Michael helps Leon, they can seal the driveway in 3 hours. How long would it take Michael to seal the driveway alone?

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It takes Leon 7 hours to seal his driveway working by himself. If Michael helps Leon, they can seal...

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