Homestead Farm

The Homestead Farm market offers fresh organic product every Saturday morning. The counter opens at 9am. However, the customers start lining up at 8.30am.Customers show up at a rate of 30/hr until 9.30am and then at a rate of 15/hr until 10.30am. The counter can serve at a rate of 20/hr, and it works till all are served.

Draw an inventory build-up diagram and answer the following questions.

Questions:

1. At what time will the counter finish serving the last customer?

Answer:

2. What is the average flow rate on a typical Saturday morning (from 8.30am to when the last customer is served)?

Answer:

3. At what time will there be 15 customers in the line?

Answer: