It requires 5 hours for Mary to paint a building. If she and Jack work
together, they can pain...
Mathematics, 25.03.2020 05:29 FortniteB
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.
Answers: 1
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