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If a beverage is labeled as 100-proof, what percentage of alcohol does it contain?

  1. 25%

  2. 50%

  3. 75%

  4. 100%

The correct answer is: 50%

A beverage labeled as 100-proof contains 50% alcohol by volume. The proof system is a measure of the strength of alcoholic beverages. In the United States, the proof value is calculated as double the percentage of alcohol content. Therefore, a 100-proof beverage means that the alcohol content is 50% (100 divided by 2). Understanding this labeling is important for proper serving and responsible consumption, as it helps consumers gauge the potency of the beverage they are consuming. Recognizing proof can also assist in making informed decisions regarding alcohol service in hospitality settings.