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MATH / Each good worker can paint my new house alone in 12 hours. Each bad worker can…

Problem

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problem

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?

level

Level 5

type

Prealgebra

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