To calculate the number of drinks needed (D):
\[ D = A \times T \times 1.25 \]
Where:
The average person will consume about one and a quarter drinks per hour at an event that has an open bar. Some may drink much more than this, and some may drink less, but 1.25 drinks per hour is accurate on average. For events where the bar is not open, the drinks per hour decreases as people watch their spending.
Let's assume the following values:
Using the formula:
\[ D = 50 \times 4 \times 1.25 = 250 \text{ drinks} \]
The number of drinks needed is 250 drinks.
