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40 градусов (Therefore, "80 proof" is 40% alcohol by volume (most of the other 60% is water). If an 150 proof beverage is mixed half-and-half with water, the drink is 75 proof. US Federal regulation (CFR 27 5.37 Alcohol Content) requires that liquor labels state the percentage alcohol by volume (sometimes abbreviated ABV).  wikipedia.org Alexander Demidov) | |||