Mathematics, 19.05.2020 22:13, smilebehappy468

A pool contains 6000ft of water. Pump A can drain the pool in 15 hours, pump B can drain it in 12 hours, and pump C can drain it in 10 hours. How long will it take all three pumps working together to drain the pool?

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A pool contains 6000ft of water. Pump A can drain the pool in 15 hours, pump B can drain it in 12 ho...