Question: A solution containing 60% ethanol by mass is obtained by mixing 1136 liters of ethanol-water mixture with a density of 877 kg/m3, containing 75% ethanol

A solution containing 60% ethanol by mass is obtained by mixing 1136 liters of ethanol-water mixture with a density of 877 kg/m3, containing 75% ethanol by mass, with a solution containing 40% ethanol by mass, with a density of 952 kg/m3. Calculate the required volume, in liters, of the solution containing 40% by mass of ethanol

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