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Mathematics 6 Online
OpenStudy (anonymous):

Dennis paints three times as fast as Juanita. Working together, they can paint a house in 12 hours. How long would it take either of them working alone? I don't even know how to set this one up...

OpenStudy (anonymous):

Dennis works 9 hours and Juanita works 3

OpenStudy (anonymous):

\(12(r+3r)=1\)

OpenStudy (anonymous):

rate times time equals one job

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