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Mathematics, 31.10.2019 04:31 amauris77748
An earthquake strikes an area without food or water. three crews arrive. one can dispense food in 10 hours. a second one in 30 hours and a third in 15 hours. how long will it take all three crews working together to dispense food
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An earthquake strikes an area without food or water. three crews arrive. one can dispense food in 10...
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