A small restaurant has 30 tables. When guests arrive, the manager seats them, servers serve them, and then the customers pay their bills. It takes the manager 1 minute to find a table for customers. The servers take 2 minutes/table to bring the customers a menu, 3 minutes/table to serve drinks and order the food, and 4 minutes/table to serve the food. The servers also bring the customers a check and this takes 1 minute/table. A cashier processes the bills and takes payments and this takes 2 minutes.

What is the capacity of the system and the bottleneck resource? What is the average throughput time for a table of customers? If there are 20 groups/hour arriving, what is the number of tables filled?