The Burger corporation is looking at its fast-food franchises and in particular is interested in how quickly people are served. In one restaurant, where it receives most of its complaint, an analysis reveals the following. The attendants can serve, on the average, 66 costumers per hour. Customers arrive at the average rate of one every minute (60 per hour). Assume that there is only one line (a single server model). The owner states: "Why do they complain? We can serve even 10 percent more without any problems."
Explain why you think there are so many complaints.
What will happen if the average number of customers grows by 10 percent?
The owner is told that he should replace the single line with a two server model, what would that do to the complaints?