Mathematics, 03.08.2019 16:00 admiralaj85

Each good worker can paint my new house alone in 12 hours. each bad worker can paint my house alone in 36 hours. i need my house painted in 3 hours. if i can only find 3 good workers, how many bad workers must i also find in order to have my house painted on time?

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Each good worker can paint my new house alone in 12 hours. each bad worker can paint my house alone...