Mathematics, 04.12.2020 17:00, leomessifanboy678

Three students have started a fence-painting business. Working together, Pragnesh and Qazi can paint the fence in 2 hours. Similarly, Pragnesh and Ronghui can paint the fence in 3 hours when they work together. Finally, when Qazi and Ronghui work together, they can paint the fence in 4 hours. How long would it take if all three students worked together to paint the fence

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Three students have started a fence-painting business. Working together, Pragnesh and Qazi can paint...