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Mathematics, 24.03.2020 21:06 thajaalalqo

It requires 5 hours for Mary to paint a building. If she and Jack work
together, they can paint the same building in 3 hours. Find the time, in
hours, it would take Jack to the building alone.

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Answers: 2

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It requires 5 hours for Mary to paint a building. If she and Jack work
together, they can pain...
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