Final answer:
To equal a Standard Drink, 2 ounces of spirits containing 30% alcohol by volume (ABV) are required, as a Standard Drink contains about 0.6 ounces of pure alcohol.
Step-by-step explanation:
To determine how many ounces of spirits containing 30% alcohol it would take to equal a Standard Drink, we need to understand what constitutes a Standard Drink in terms of alcohol content. In the United States, a Standard Drink typically contains about 0.6 ounces of pure alcohol. Since the spirits in question are 30% alcohol by volume (ABV), each ounce of spirits has 0.3 ounces of pure alcohol.
To calculate how many ounces of the 30% ABV spirit equal a Standard Drink, we divide the amount of pure alcohol in a Standard Drink by the pure alcohol content per ounce of the spirit:
0.6 ounces (pure alcohol in a Standard Drink) ÷ 0.3 ounces (pure alcohol in one ounce of 30% ABV spirit) = 2 ounces of the spirit.
Therefore, it takes 2 ounces of a spirit with 30% ABV to equal a Standard Drink.