What is the average number of folks either purchasing a soda or waiting to purchase one?
The soda machine outside the lecture hall sees a steady stream of customers throughout the day. The machine takes 4 seconds to deliver a can of carbonated sugar water once the button is pressed and students generally know what they want from the machine - the average feeding of the machine takes two seconds. Over the course of a twelve hour lecture day, students arrive at the rate of 500 per hour.
A) 1.83
B) 2.16
C) 2.46
D) 2.92
Answer: D
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