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Regarding No of items in queue.Can any one solve this and tell me answer


Items arrive from an inventory-picking system according to an exponential interarrival distribution with mean 1.1 (all times are in minutes), with the first arrival at time 0. Upon arrival, the items are packed by one of four identical packers, with a single queue “feeding” all four packers; the packing time is TRIA (2.75, 3.3, 4.0). Packed boxes are then separated by type (20% international and 80% domestic), and sent to shipping. There is a single shipper for international packages and two shippers for domestic packages with a single queue feeding the two domestic shippers. The international shipping time is TRIA (2.3, 3.3, 4.8), and the domestic shipping time is TRIA (1.7, 2.0, 2.7). This packing system works three 8-hour shifts, five days a week. All the packers and shippers are given a 15-minute break two hours into their shift, a 30-minute lunch break four hours into their shift, and a second 15-minute break six hours into their shift; use the wait schedule rule. Run the simulation for four weeks (twenty working days) to determine the average and a maximum number of items or boxes in each of the three queues. Consider the first day as a warm-up period. Run the model for 5 replications and show graphically the results for single replication and 5 replications.