Question 1 (4+4+5+1 = 14 points) b) Customers arrive to this Chipotle in the following way: At time 0, 120 sec, 240 sec, 360 sec, ..., two customers arrive together, and M1 and M2 each takes a customer to serve. At time 60 sec, 180 sec, 300 sec, one customer arrive and M2 (the faster worker) serves him/her. Draw the Gantt chart from time to time 300 sec. Each grid in the following chart represents 10 seconds. You can extend the below chart as needed. Consider the Chipotle example we discussed in the class. But this time, both workers M1 and M2 need a longer time to finish their tasks (the activity times change to 100 seconds and 60 seconds, respectively). M1 M1 100 sec M2 M3 40 sec M2 60 sec Bu M3 c) Under the arrival schedule given in (b), calculate the following run-time parameters: a) Calculate the following design parameters for this process: Demand Rate units/hour Cycle time (CT) for Stage 1 sec / unit Flow Rate units/hour CT for Stage 2 sec / unit Actual Cycle Time sec/unit Bottleneck Stage: WIP for M1 units Process Designed CT sec / unit WIP for M2 units Process Capacity units/hour WIP for Buffer units WIP for M3 units Total WIP units Flow Time sec d) Use the total WIP and the flow time calculated in (c), then apply the Little's formula to get the flow rate and the actual CT. Underline the correct answer: a. The flow rate calculated using the Little's law is the same/more/less than the flow rate calculated in (c) using the Gantt chart. b. The actual CT calculated using the Little's law is the same/more/less than the actual CT calculated in (c) using the Gantt chart