Problem 1: Arnold's Muffler Shop in New Orleans, Arnold's mechanic, Reid Blank, is able to install new mufflers at an average rate of 3 per hour, or about 1 every 20 minutes. Customers needing this service arrive at the shop on the average of 2 per hour. Arnold estimates that the cost of customer waiting time, in terms of customer dissatisfaction and lost goodwill, is $50 per hour of time spent waiting in line. Moreover, the salary of Blank is $15/h. A. Calculate the preceding operating characteristic. B. Calculate the total daily cost of the queuing system