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Mathematics, 23.06.2019 13:00 364781

Walter, bill, and tom want to decorate the multi-purpose room in school for a dance. it would take walter and bill 4 hours each to do the job and tom alone could do the job in 3 hours. if all work together, how long will it take them to decorate the room?

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Walter, bill, and tom want to decorate the multi-purpose room in school for a dance. it would take w...

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