Brown Laundry has a variable demand. The daily demand ranges from 100 to 140 customers a day with an average of 5 items. The average daily demand is 110 customers. The laundry operates 10 hours a day. Each order takes approximately 5 minutes.

Required:

a. What is the average customer waiting time, in minutes?

b. What is the cycle time for an order?

c. The manager has decided that the waiting time is too long and has increased the workday to 11 hours. What is the waiting time now? Will the customers be any happier?