Mathematics, 24.01.2021 14:00 maligv

A scientist needs 80 liters of a 30% solution of alcohol. She has a 20% solution and a 60% solution available. How many liters of the 20% solution and how many liters of the 60% solution should she mix to make the 30% solution?

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A scientist needs 80 liters of a 30% solution of alcohol. She has a 20% solution and a 60% solution...

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