How many standard drinks are in a fifth of liquor?

A standard drink in the United States typically contains about 14 grams of pure alcohol. This is generally equivalent to 1.5 ounces (44 milliliters) of distilled spirits, which translates to approximately one shot.

A fifth of liquor, also known as a fifth of a gallon, is equivalent to 750 milliliters. To determine the number of standard drinks in a fifth, you can use the following calculation:

1. Start by converting milliliters to ounces: 750 mL is roughly 25.4 ounces (since 1 ounce is about 29.57 mL).

2. Since there are approximately 1.5 ounces in a standard drink, divide the total ounces by the amount in a standard drink:

25.4 ounces ÷ 1.5 ounces/standard drink = about 16.93 standard drinks.

This rounds up to approximately 17 standard drinks. By understanding this calculation, it becomes clear that a fifth of liquor contains around seventeen standard drinks, making the correct answer align with this calculation.