Question: 18. Dalton has on hand a 5% alcohol solution and a 20% alcohol solution. He needs 30 liters of a 10% alcohol solution. How

18. Dalton has on hand a 5% alcohol solution and a 20%

18. Dalton has on hand a 5% alcohol solution and a 20% alcohol solution. He needs 30 liters of a 10% alcohol solution. How may liters of each solution should he mix together to obtain 30 liters?

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