Which formula can be used to calculate the amount of pure alcohol in a beverage?

The formula that accurately calculates the amount of pure alcohol in a beverage is the one that utilizes the alcohol by volume (ABV) percentage combined with the total volume of the beverage. By multiplying the overall volume of the drink by the alcohol/volume ratio, you derive the precise amount of pure alcohol.

This approach directly correlates the two key factors needed: the total volume of the beverage and its alcohol concentration. For example, if you have a 500ml beverage with an alcohol content of 10% (0.10 when expressed as a decimal), the calculation would be 500ml x 0.10, resulting in 50ml of pure alcohol. This method is straightforward and provides accurate results, making it fundamental for understanding alcohol consumption quantities.