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March 28, 2017

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7. Marcus can paint a garage in 3 hours. Gina can paint the same garage in 2 hours. How long will it take Marcus and Gina to paint the garage if they work together

  • Algebra - ,

    Combined rate
    = 1/3 garage/h + 1/2 garage/h
    = 5/6 garage/h

    5/6 garage/h * T (h) = 1 garage
    T = 6/5 h = 1 h, 12 minutes.

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