Mathematics, 20.07.2019 20:00 marabic22

An earthquake strikes and an isolated area is without food or water. three crews arrive. one can dispense needed supplies in 4545 hours, a second in 9090 hours, and a third in 6060 hours. how long will it take all three crews working together to dispense food and water?

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An earthquake strikes and an isolated area is without food or water. three crews arrive. one can dis...

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