You’re managing a playhouse showing off Broadway musicals and dramas. For the evening shows, customers arrive at the rate of 100 per hour and the ticket seller spends 30 seconds with each customer, which includes providing the ticket, validating parking and punching frequent watcher cards. You’re concerned because many customer are not seated until after the orchestra overture.
a. What is the average customer time in the system?
b. What would be the average customer time in the system if you opened a second window for taking tickets?