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The historian used shipping records to substantiate her claim about trade.
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A storage tank contained 12,500 liters of water before an irrigation cycle and 10,000 liters afterward. No water entered the tank during the cycle. By what percentage did the amount of water in the tank decrease?
The tank lost 2,500 liters. That loss is 20% of the original 12,500 liters, so the amount decreased by 20%.
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