Q4An arsenal has six tasks waiting to be processed and the processing time and duecompletion time for each task is shown in the table below. Assuming that the tasks givenare in the order of the table:MissionABCAD<EFProcessing time(days)<612<142410<4Due for completion(days)<22<14301842534<Requirements1. Sort the jobs according to the first come first served rule and the shortest processingtime rule and calculate the average completion time, average number of jobs in thesystem, average delay time and equipment utilization respectively and explain which isthe better sorting method.

Formula Used: Flow Time= Sum of previous Processing time+ Current Processing time Total flow…

Answered: 1. Sort the jobs according to the first…

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...

See similar textbooks

Similar questions

Farihah is a project manager for a systems development project involving a new database application for her organization’s human resources department. Despite Farihah’s best efforts at estimating the time requirements for the project, the team has missed the deadline for completing the Analysis Phase and producing the System Proposal. Farihah had estimated during her 6-week Planning Phase that Analysis would require 2 months, but the team finished the System Proposal 2 weeks behind their planned target date. Based on her discussions with the team members, Farihah believes that the system is more complex than she originally thought. Should Farihah adjust her timeline, or can she try to make up for the lost two weeks? Farihah needs your advice.
The mowry machine shop still has five jobs to be processed as of 8A.M today (day 29) at its bottleneck operation. The time since the order arrived, processing time, and promised due dates are given in the following table. The jobs are listed in order of arrival: Job Time Since Order Arrived (days ago) Processing Time (days) Due Date (days from now) A 12 4 10 B 7 3 24 C 5 10 16 D 3 8 7 E 1 4 13 Develope serpate schedules by using the FCF and EDS rules. Using FCF, the order is Using EDS, the order is The average flow time and average days past due are. Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Answer completely. You will get up vote for sure.
Twelve tasks, with times and precedence requirements as shown in the following table, are tobe assigned to workstations using a cycle time of 1.5 minutes. Two heuristic rules will be tried:(1) greatest positional weight, and (2) most following tasks.In each case, the tiebreaker will be shortest processing time. TaskLength(minutes)ImmediatePredecessora 0.1 —b 0.2 ac 0.9 bd 0.6 ce 0.1 —f 0.2 d, eg 0.4 fh 0.1 gi 0.2 hj 0.7 ik 0.3 jl 0.2 k a. Draw the precedence diagram for this line.b. Assign tasks to stations under each of the two rules.c. Compute the percentage of idle time for each rule
GreenzTech Inc. is planning on installing a new computerised accounting system. For thisproject, they have established the following activities, precedence relationships, and timeestimates in weeks:1. Based on the calculation what is the slack?
What are priority rules? Provide examples and indicate why a manager would choose to adopt one over another.
Five Hong Kong tailors—Simon, Pat, Choon, Paul, and Wu—must complete alterations ona suit for the duke and a dress for the duchess as quickly as possible. On the dress, Choonmust first spend 45 minutes cutting the fabric, then Pat will spend 75 minutes sewing thebodice, Simon will need 30 minutes stitching the sleeves, Paul 2 hours lacing the hem, andfinally Wu will need 80 minutes for finishing touches. As far as the suit is concerned, Patbegins with shortening the sleeves, which requires 100 minutes. He is followed by Paul,who sews in the lining in 1.75 hours; Wu, who spends 90 minutes sewing on the buttons andnarrowing the lapels; and finally Choon, who presses and cleans the suit in 30 minutes.Determine precisely when each tailor should be performing each task in order to minimize the total time required to complete the dress and the suit. Assume that the tailorsstart working at 9 a.m. and take no breaks. Draw the Gantt chart indicating your solution.
The Porsche Shop, founded in 1985 by Dale Jensen, specializes in the restoration of vintage Porsche automobiles. One of Jensen's regular customers asked him to prepare an estimate for the restoration of a 1964 model 356SC Porsche. To estimate the time and cost to perform such a restoration, Jensen broke the restoration process into four separate activities: disassembly and initial preparation work (A), body restoration (B), engine restoration (C), and final assembly (D). Once activity A has been completed, activities B and C can be performed independently of each other; however, activity D can be started only if both activities B and C have been completed. Based on his inspection of the car, Jensen believes that the following time estimates (in days) are applicable: Activity Optimistic Most Probable Pessimistic A 3 4 8 B 3 4 5 C 5 7 9 D 4 5 12 Jensen estimates that the parts needed to restore the body will cost $4000…
The Porsche Shop, founded in 1985 by Dale Jensen, specializes in the restoration of vintage Porsche automobiles. One of Jensen's regular customers asked him to prepare an estimate for the restoration of a 1964 model 356SC Porsche. To estimate the time and cost to perform such a restoration, Jensen broke the restoration process into four separate activities: disassembly and initial preparation work (A), body restoration (B), engine restoration (C), and final assembly (D). Once activity A has been completed, activities B and C can be performed independently of each other; however, activity D can be started only if both activities B and C have been completed. Based on his inspection of the car, Jensen believes that the following time estimates (in days) are applicable: Activity Optimistic Most Probable Pessimistic A 3 4 8 B 3 4 5 C 5 7 9 D 4 5 12 Jensen estimates that the parts needed to restore the body will cost $4000…
Planning the next semester's course schedule. The optimal schedule for the whole class may be calculated with the help of an algorithm after students enter their desired course load. The school has determined that a perfect schedule cannot be created in a reasonable length of time. To save time, the team has elected to use a less complex approach that nonetheless produces a workable, if not perfect, strategy. Which overarching principle may be seen most clearly in this decision?
To complete the rotor assembly for an experimental spacecraft, Gilbert has laid out nine major activities involved. These activities have been labelled A to I in the table below, which also shows their estimated completion times (in weeks) and their immediate predecessors. EVENTS AND ACTIVITIES FOR ROTOR ASSEMBLY ACTIVITIES TIMES (IN WEEKS) PRECEDING EVENT A M B A 1 2 3 - B 2 3 4 A C 4 5 6 A D 8 9 10 A E 2 5 8 B F 4 5 6 B, C G 1 2 3 F, D H 1 3 5 E, F I 2 4 6 H, G Key: A is optimist time, M is the most likely time and B is the pessimistic time. a) Calculate the expected time for each activity b) Draw a Gantt Chart from the same information above c) State the critical path and the maximum number of weeks the project will take to be completed. d) Discuss the pros and cons of using the Gantt chart as a planning and scheduling tool?
Managers at the First Community Bank are attempting to shorten the time it takes customers with approvedloan applications to get their paperwork processed. The flowchart for this process, consisting of several differ-ent activities, each performed by a different bank employee, is shown in Figure 5.1. Approved loan applicationsfirst arrive at activity or Step 1, where they are checked for completeness and put in order. At Step 2, the loansare categorized into different classes according to the loan amount and whether they are being requested forpersonal or commercial reasons. While credit checking commences at Step 3, loan application data are enteredin parallel into the information system for record-keeping purposes at Step 4. Finally, all paperwork for setting upthe new loan is finished at Step 5. The time taken in minutes is given in parentheses.Which single step is the bottleneck, assuming that market demand for loan applications exceeds the ca-pacity of the process? The management…
Udesign is a plant producing mass production dresses. The following table shows the tasks needed to be preformed, their task times and proceeding tasks. It is required to produce 30 dresses per hour. Task Immediate predecessor Task time (sec) A - 30 B - 40 C - 20 D A 100 E B,D 25 F C,D 50 G D,E,F 50 H G 90 a- Compute the cycle time and minimum number of workstations required b- Draw the precedence diagram c- What is the maximum output for this line d- Assign tasks to workstations using most number of followers e- Compute efficiency of such line

SEE MORE QUESTIONS

Recommended textbooks for you

Practical Management Science

Operations Management

ISBN:

9781337406659

Author:

WINSTON, Wayne L.

Publisher:

Cengage,

Operations Management

ISBN:

9781259667473

Author:

William J Stevenson

Publisher:

McGraw-Hill Education

Operations and Supply Chain Management (Mcgraw-hi…

Operations Management

ISBN:

9781259666100

Author:

F. Robert Jacobs, Richard B Chase

Publisher:

McGraw-Hill Education

Practical Management Science

Operations Management

ISBN:

9781337406659

Author:

WINSTON, Wayne L.

Publisher:

Cengage,

Operations Management

ISBN:

9781259667473

Author:

William J Stevenson

Publisher:

McGraw-Hill Education

Operations and Supply Chain Management (Mcgraw-hi…

Operations Management

ISBN:

9781259666100

Author:

F. Robert Jacobs, Richard B Chase

Publisher:

McGraw-Hill Education

Business in Action

Operations Management

ISBN:

9780135198100

Author:

BOVEE

Publisher:

PEARSON CO

Purchasing and Supply Chain Management

Operations Management

ISBN:

9781285869681

Author:

Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. Patterson

Publisher:

Cengage Learning

Production and Operations Analysis, Seventh Editi…

Operations Management

ISBN:

9781478623069

Author:

Steven Nahmias, Tava Lennon Olsen

Publisher:

Waveland Press, Inc.

SEE MORE TEXTBOOKS

1. Sort the jobs according to the first come first served rule and the shortest processing time rule and calculate the average completion time, average number of jobs in the system, average delay time and equipment utilization respectively and explain which is the better sorting method.