11. a guest orders a drink that contains 4 1/...
11. a guest orders a drink that contains 4 1/2 ounces of 80 - proof liquor. approximately how many drinks does this beverage contain?\no 1\no 2\no 3\no 4
Answer
# Answer:
C. 3
# Explanation:
## Step1: Understand proof - alcohol relation
Proof is twice the percentage of alcohol by volume. So 80 - proof liquor is 40% alcohol by volume.
## Step2: Calculate alcohol amount in drink
The drink has $4\frac{1}{2}=\frac{9}{2}$ ounces of liquor. The amount of alcohol is $0.4\times\frac{9}{2}= 1.8$ ounces.
## Step3: Define a standard drink
A standard drink in the US generally contains about 0.6 ounces of pure alcohol.
## Step4: Calculate number of drinks
Number of drinks = $\frac{1.8}{0.6}=3$.