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Mathematics, 10.12.2020 02:10 zakwolthuis

Two boys can paint a fence in 7 hours. Two girls can paint the same fence in 5 hours. In the unlikely event that they can work at the same pace together, how long would the four people working together take to paint the same fence? (Round your answer to the nearest tenth.)

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Two boys can paint a fence in 7 hours. Two girls can paint the same fence in 5 hours. In the unlikel...
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