Gantt Chart A machine shop runs a round the clock operations and schedules five jobs numbered 1,2,3,4and 5 at four workstations A, B, C and D for the number of hours given below: Job 1: A/3, C/4, D/2, B/3 Job 2: B/3, A/4, C/3, D/3 Job 3: D/3, B/3, C/4, A/2 Job 4: C/2, A/4, B/3, D/3 Job 5: D/3, B/3, C/2, A/3 The sequence of scheduling the jobs is Job 1,Job 2, Job 3, Job 4 and lastly, Job 5 Construct a Gantt Chart for the above operation and answer the following questions 1. What is the make span? 2. How many hours does it take to complete each job? 3. What is the wait time for each job? 4. What is the idle time of each workstation during the operation of completing these jobs? 5. What is the utilization rate of the work stations ? Utilization rate = Total time of operation of the available workstations / Total time available at all workstations Critical Ratios You are provided the following information on job status and have been asked to determine Job priorities using the Critical Ratio method. Job Due Date Workdays Remaining A 40 5 B 38 10 35 6 D 37 5 The current work day is 30. 1. Which job should have the highest priority? 2. Which job should be accorded the lowest priority