Job A C D E Processing time Job Due Date (Days) 24 25 17 3 7 (Days) 18 17 12 2 5 At a paint shop, there are painting jobs waiting to be completed. The table shows their processing times and due dates. The firm aims to determine the order of jobs according to FCFS. Jobs are assigned a letter in the order they arrived. What is the average completion time? Today is day 1 and work begins today. (Round your final answer to two decimal places. Do not enter any units. Only enter a number

Job A C D E Processing time Job Due Date (Days) 24 25 17 3 7 (Days) 18 17 12 2 5 At a paint shop, there are painting jobs waiting to be completed. The table shows their processing times and due dates. The firm aims to determine the order of jobs according to FCFS. Jobs are assigned a letter in the order they arrived. What is the average completion time? Today is day 1 and work begins today. (Round your final answer to two decimal places. Do not enter any units. Only enter a number

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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A machine center in a job shop for a local fabrication company has five unprocessed jobs remaining at a particular point in time. The jobs are labeled A, B, C, D, and E in the order that they entered the shop. The respective processing times and due dates are given in the table below. What is the sequence the of jobs by CR rules? Job Processing Time Due Date A 10 32 B. 55 34 C. 11 31 60 35
Use the S/O rule to schedule the following jobs. Note that processing time includes the timeremaining for the current and subsequent operations. In addition, you will need to know thenumber of operations remaining, including the current one.JobRemainingProcessingTimeDueDateRemainingNumber ofOperationsA 4 14 3B 16 32 6C 8 8 5D 20 34 2E 10 30 4F 18 30 2
On Monday morning, Baxter Industries has the following jobs waiting for processing in two departments, milling, and drilling, in that order. Time Required (hours) Job Mill Drill 216 7 11 327 6 10 462 8 4 519 5 8 258 3 5 617 12 15 Develop a minimum makespan schedule using Johnson's rule. The schedule using Johnson's rule is - - - - - . Choose the correct Gantt chart with the minimum makespan schedule. The correct graph is .
uestion 2:ID:_________________________Three jobs are to be scheduled on two machines A and B. Assume that the jobs are processed in the sequence A-B. The processing times are: JobA1 2 35 7 3B4 7 5Draw a Gantt chart that shows the schedule corresponding to the sequence 1-2-3 of the jobs.
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.
Q5(a) Wonderloaf Bakery has orders for five specialty jobs A, B, C, D, and E that must be processed sequentially through two work centers baking and decoration. The amount of time in hours required for the jobs is shown in Table Q5(a). Determine the schedule sequence that minimizes the total elapsed time for five jobs using the following techniques; (i) Critical ratio; (ii) Johnson's Rule; Table Q5(a) Job (Orders Received) Processing time(hrs) Baking Hours remaining Decoration A 13 3 в 18 4 17 8 2 D 15 7 4 E 22 6 10
3. Eddie Irwin works in the data processing department at the local medical center. He is required to keep a weekly time card. Please fill out the time card Date Out Sun. Mon. Tues. Wed. Thur. Fri. Sat. 12/13 In 12/14 8:15am 12:30pm 12/15 8:35am 12:50pm 12/16 8:15am 12:10pm 1:15pm 8:30am 12 noon 12/17 8:25am In 12:30pm 1:10pm 1:30pm 12:45pm 1:50pm Out 4:30pm 5:10pm 5:00pm 4:20pm 5:30pm Total Hours>>> Hours
Jobs A, B, C, D, and E must go through Processes I and II in that sequence (Process Ii rst, then Process II). Use Johnson’s rule to determine the optimal sequence in which toschedule the jobs to minimize the total required time.Required RequiredProcessing ProcessingJob Time on I Time on IIA 4 5B 16 14C 8 7D 12 11E 3 9
An independent accountant is planning to prepare tax returns for six of her clients.Prior to her actually preparing each return, her secretary checks the client’s file to besure all the necessary documentation is there and obtains all the tax forms needed forthe preparation of the return. Based on past experience with the clients, her secretaryestimates that the following times (in hours) are required for preparation of the returnand for the accountant to complete the necessary paperwork prior to filing each return:Client Secretary Time Accountant Time1 1.2 2.52 1.6 4.53 2.0 2.04 1.5 6.05 3.1 5.06 0.5 1.5In what order should the work be completed in order to minimize the total timerequired for all six clients?
Job Processing time (Days) Job Due Date (Days) A 12 18 14 23 C 7 15 2 7 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 shortest processing time (SPT). Jobs are assigned a letter in the order day arrived. The utilization is _%. Today is day 1 and work begins today.
K The following jobs are waiting to be processed at a small machine center: JOB 10 20 30 40 50 DUE DATE DURATION (DAYS) 260 256 260 265 275 28 12 8 18 22 All dates are specified as manufacturing planning calendar days. Assume that all jobs arrived on day 200 (yesterday) in the order shown but are not scheduled to begin until day 201 (today). a) Sequence the jobs according to LPT. According to the LPT rule, the sequence of jobs should be 10, 50, 40, 20, 30 b) What is the average completion (flow) time? The average completion (flow) time is 62.8 days (round your response to one decimal place). c) What is the average job lateness? The average job lateness is 4 days (round your response to one decimal place).
A nursing home must schedule nurses in a manner that balances providing adequate patient care while keeping costs down. From historical records, administrators can project the minimum number of nurses to have on hand during each day/time slot. This data is shown below. Shift Time Slot Minimum number of nurses needed 1 12 am-4 10 2 4 am-8 6 3 8 am-12 8 4 12 pm-4 12 5 4 pm-8 10 6 8 pm-12 14 Nurses must start work at the beginning of one of the four-hour shifts (starting as early as 12 am midnight or as late as 8pm evening) and work for eight hours. Nurses who begin working at 8 pm will work until 4 am the next morning. Formulate and solve the nurse-scheduling problem so as to minimize excess stagging while satisfying minimum staffing requrements. What is the value of total excess staffing?