SOLUTION: Cynthia, Chris, and Lexi paint houses. Cynthia can paint a house in 4 hours. Chris can paint the same house in 3 hours. The three working together can paint the house in 1 hour. Ho
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-> SOLUTION: Cynthia, Chris, and Lexi paint houses. Cynthia can paint a house in 4 hours. Chris can paint the same house in 3 hours. The three working together can paint the house in 1 hour. Ho
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Question 1168983: Cynthia, Chris, and Lexi paint houses. Cynthia can paint a house in 4 hours. Chris can paint the same house in 3 hours. The three working together can paint the house in 1 hour. How many hours does it take Lexi to paint the house? Answer by ikleyn(52872) (Show Source):
The combined rate of work for three participants is 1 job per hour.
The combined rate of work for Cyntia and Chris is = of the job per hour.
Hence, the Lexi's individual rate of work is the difference = of the job per hour.
It means that Lexi will complete the job in hours = 2 hours = 2 hours and 24 minutes. ANSWER
