There are painting jobs awaiting at a paint shop. Their processing times and due dates are shown in the table. The firm wants to determine the sequence of jobs according to the earliest due date (EDD). Jobs are assigned a letter in the order day arrived. What is the average number of jobs in the system? Today is day 1 and work begins today. (Round your final answer to two decimal places. Enter a number without any units.(c)
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- Currently a company that designs Web sites has five customers in its backlog. The time since the order arrived, processing time, and promised due dates are given in the following table. The customers are ready to be scheduled today, which is the start of day 190. Customer Time Since Order Arrived (days ago) Processing Time (days) Due Date (days from now) Upper AA 6 18 66 Upper BB 3 24 58 Upper CC 2 32 100 Upper DD 10 22 26 Upper EE 8 12 50 a. Develop separate schedules by using the FCFS and EDD rules. Compare the schedules on the basis of average flow time and average days past due. Part 2 Using the FCFS (first come, first served) decision rule for sequencing the customers, the order is: Sequence 1 2 3 4 5 Customer D E A B C Part 3 Using…The following 5 overhaul jobs are waiting to be processed at Avianic's Engine Repair Inc. These jobs were logged as they arrived. All dates are specified as planning calendar days. Calculate the Critical Ratios (CR): (Enter all responses rounded to two decimal places.) Job CR Job Due Date Duration (days) 103 103 214 10 205 205 223 309 309 217 11 412 219 412 517 216 15 517 Assume that all jobs arrived on day 180; today's date is 200.At an auto shop, six jobs are currently in queue. Job A B C D E F Arrival order 1 2 3 4 5 6 Processing time (minutes) 33 27 36 28 21 23 Using the shortest processing time scheduling approach, what is the average inventory of jobs in the system? Assume that processing of jobs will start immediately. Note: Round your answer to 2 decimal places.
- Five jobs are waiting for processing through two work centers. Their processing time (in minutes) at each work center is contained in the table below. Each job requires work center Alpha before work center Beta. According to Johnson's rule, which job should be scheduled first in the sequence? O A. V OB. U O C. R OD. S O E. T Job R S T Alpha 20 23 50 26 55 Beta 34 35 20 26 75Jobs A, B, C, and D are in queue at work center 10 before being completed on work center 20. The table below pertains to the jobs and the work centers: (Job, Process time (day) at WC 10, process time (day) at WC 20, Due Date, arriving order). Today is day 1. Job Process Time ABCD Work Center Work Center 10 20 3 4 3 3 3 5 4 1 Due DateArriving order 8 24 18 15 2143 D If the jobs are scheduled by the shortest process time (SPT) rule, the total idle time (total of both WCs) during day 1 through day end (last job finishing date) is: Hint: you need to first determine the job's operation order by SPT rule. Then in each work center, you need to schedule each job's start date and end date on both WCs. 12 11 10 9 None of themWhen grouping by time, a user can only select one time unit. True O False
- Currently a company that designs Web sites has six customers in its backlog. The time since the order arrived, processing time, and promised due dates are given in the following table. Job Time Since Order Arrived (days ago) Processing Time (days) Due Date (days from now) A 6 18 48 B 4 22 52 C 1 30 70 D 10 14 28 E 7 12 56 F 5 20 62 Develop a schedule by using the first-come, first-served (FCFS) rule and calculate the average flow time and average days past due for the schedule. Develop a schedule by using the earliest due date (EDD) rule and calculate the average flow time and average days past due for the schedule. Comment on the performance of the FCFS and EDD rules relative to average flow time and average days past due.To control queue and make deadlines, two things are essential: must schedule and plan carefully , what are these ?What are the advantages and disadvantages of the shortest processing time (SPT) rule?
- Calculate the Critical Ratios (CR): (Enter all responses rounded to two decimal places.) The following 5 overhaul jobs are waiting to be processed at Avianic's Engine Repair Inc. These jobs were logged as they arrived. All dates are specified as planning calendar days. Job CR 103 Job Due Date Duration (days) 103 214 10 205 223 7 309 217 11 412 219 5 517 217 15 Assume that all jobs arrived on day 180; today's date is 200.Differentiate between the general time table and the specifictime tableJane Reed bakes breads and cakes in her home for parties and other affairs on a contract basis. Jane has only one oven for baking. One particular Monday morning she finds that she has agreed to complete five jobs for that day. Her husband John will make the deliveries, which require about 15 minutes each. Suppose that she begins baking at 8:00 A.M. (given) Determine the sequence in which she should perform the jobs in order tominimizea. Mean flow time.b. Number of tardy jobs.c. Maximum lateness.