Final answer:
The average turn time for a table of two is 6 minutes, for a table of four is 12 minutes, and for a table of eight is 24 minutes.
Step-by-step explanation:
The average turn time for a table of two can be determined by calculating the average time between two successive arrivals. If one customer arrives every two minutes on average, then it would take six minutes on average for three customers to arrive (2 minutes per customer x 3 customers).
For a table of four, the average turn time would be 12 minutes (2 minutes per customer x 6 customers).
Similarly, for a table of eight, the average turn time would be 24 minutes (2 minutes per customer x 12 customers).