please solve 5.15

5-15 Modify the model from 5-14 to include 30-minute lunch breaks for each clerk. Start the first lunch break 180 minutes into the day. Lunch breaks should follow one after the other covering a 150-minute time span during the middle of the day. The breaks should be given in the following order: Mary, Sue, Neil, Kathy, and Jean. What impact does this have on system time by customer?

5-13 An office of a state license bureau has two types of arrivals. Individuals interested in purchasing new plates are characterized to have interarrival times distributed as EXPO(6.8) and service times as TRIA(8.8, 13.7, 15.2); all times are in minutes. Individuals who want to renew or apply for a new drivers license have interarrival times distributed as EXPO(8.7) and service times as TRIA(16.7, 20.5, 29.2). The office has two lines, one for each customer type. The office hasfive clerks: two devoted to plates(Mary and Kathy), two devoted to licenses (Sue and Jean), and the team leader (Neil) who can serve both customer types. Neil will serve the customer who has been waiting the longest. Assume that all clerks are available all the time for the 8-hour day. Note that when entities from the front of multiple FIFO queues (corresponding to multiple Process modules) try to seize the same Resource, the logic to select which entity wins is as though all the queues were merged together into a single FIFO queue. Observe the system or cycle time for both customer types over an 8-hour day. Note that, since Neil is multi-talented, youd want to assign someone else to the next customer if you have a choice of which employee to assign.

5-14 The office described in 5-13 is considering cross-training Kathy so she can serve both customer types. Modify the model to represent this, and see what effect this has on system time by customer.