machine would still service 15 jobs per hour. Currently, admin- istrative assistants earn an average of $15 per hour. (a) Determine the utilization of each of the copy centers. (b) Determine the average waiting time at each of the copy centers. (c) What is the annual cost of the administrative assistants" average waiting time using the current system? (d) Determine the utilization of the combined copy center with two copiers. (c) Determine the average waiting time at the combined copy center.