A recipe for a margarita includes 2 ounces of 80-proof tequila, and 1 ounce of 80-proof Grand Marnier. How many standard drinks does this recipe contain?

To determine the number of standard drinks in a recipe, you need to consider the alcohol content and the standard drink definition. In the United States, a standard drink is typically considered to be 0.6 ounces (14 grams) of pure alcohol.
In the given recipe, both the tequila and Grand Marnier are 80-proof, which means they contain 40% alcohol by volume.
For the tequila:
2 ounces * 0.4 (alcohol content) = 0.8 ounces of pure alcohol
For the Grand Marnier:
1 ounce * 0.4 (alcohol content) = 0.4 ounces of pure alcohol
Total alcohol content = 0.8 ounces + 0.4 ounces = 1.2 ounces of pure alcohol
Since a standard drink is defined as 0.6 ounces of pure alcohol, we can divide the total alcohol content by 0.6 to determine the number of standard drinks:
1.2 ounces / 0.6 ounces = 2 standard drinks
Therefore, the recipe for the margarita contains 2 standard drinks.