20 The Bjou Theater shows Vintage movies. Customers arrive at the theater ine at the rate of 90 per hour. The ticket sellor average 24 seconds per customer which includes placing valdation stamps on customers' parking lot receipts and punching their frequent watcher cards. Because of these added services, many customers don't get in until after the feature has started the Excel spreadsheet Queve Models a. What is the average customer time in the system? (found your answer to 2 decimal places) Average Gustomer time 0,10 b. What would be the effect on customer time in the system of having a second ticket takor doing nothing but validations and card punching, thereby cutting the average service time to 20 seconds (Round your answer to 3 decimal places.) Averens 0.00 c. What would be the customer time in the system instead of the change in Part b, a second window was opened with each server doing all three tasks? (Do not round intermediate calculations, Round your answer to 3 decimal places) c. What would be the customer time in the system if instead of the change in Part b, a second window was opened with each server doing all three tasks? (Do not round Intermediate calculations. Round your answer to 3 decimal places.) Avirage triukyteen 0.400 ml d. Would system wating time which is obtained in part (o be less than you found in (by? Yos No