OPERATIONS MANAGEMENT >C<
14th Edition
ISBN: 9781307701432
Author: Stevenson
Publisher: MCG/CREATE
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 16, Problem 7P
Using the information presented in the following table, identify the processing sequence that would result using (1) FCFS, (2) SPT, (3) EDD, and (4) CR. For each method, determine (1) average job flow time, (2) average job tardiness, and (3) average number of jobs in the system. Jobs are listed in order of arrival. (Hint: First determine the total job time for each job by computing the total processing time for the job and then adding in the setup time. All times and due dates are in hours.)
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Using the information presented in the following table, identify the processing sequence that wouldresult using (1) FCFS, (2) SPT, (3) EDD, and (4) CR. For each method, determine (1) average jobflow time, (2) average job tardiness, and (3) average number of jobs in the system. Jobs are listedin order of arrival. (Hint: First determine the total job time for each job by computing the total processing time for the job and then adding in the setup time. All times and due dates are in hours.)JobProcessingTime per UnitUnitsper JobSetupTimeDueDatea .14 45 0.7 4b .25 14 0.5 10c .10 18 0.2 12d .25 40 1.0 20e .10 75 0.5 15
Given the following information on job times and due dates, determine the optimal processingsequence using (1) FCFS, (2) SPT, (3) EDD, and (4) CR. For each method, find the average jobflow time and the average job tardiness. Jobs are listed in order of arrival.JobJob Time(hours)Due Date(hours)a 3.5 7b 2.0 6c 4.5 18d 5.0 22e 2.5 4f 6.0 20
Processing time for eight projects, displayed in the sequence they arrived.
Project
P1
P2
P3
P4
P5
P6
P7
P8
Processing time (hours)
3
1
1
2
9
6
1
1.50
2. Given the projects displayed in table above, if FCFS is used to sequence the jobs, what is the average flow rate of the projects?
Note: Round your answer to 2 decimal places.
3. Given the projects displayed in table above, if FCFS is used to sequence the jobs, what is the average flow time of the projects?
Note: Round your answer to 1 decimal place.
4. Given the projects displayed in table above, if FCFS is used to sequence the jobs, what is the average inventory of the projects?
Note: Use your rounded answers from Parts 2 and 3. Round your answer to 1 decimal place.
5. Given the projects displayed in table above, if SPT is used to sequence the jobs, what is the average flow rate of the projects?
Note: Round your answer to 2 decimal places.
6. Given the projects displayed in table above, if SPT is used to sequence…
Chapter 16 Solutions
OPERATIONS MANAGEMENT >C<
Ch. 16 - Why is scheduling fairly simple for repetitive...Ch. 16 - Prob. 2DRQCh. 16 - What are Gantt charts? How are they used in...Ch. 16 - Prob. 4DRQCh. 16 - Briefly describe each of these priority rules: a....Ch. 16 - Why are priority rules needed?Ch. 16 - What problems not generally found in manufacturing...Ch. 16 - Explain forward and backward schedulings and each...Ch. 16 - Prob. 9DRQCh. 16 - Prob. 10DRQ
Ch. 16 - Prob. 11DRQCh. 16 - What general trade-offs are involved in sequencing...Ch. 16 - Prob. 2TSCh. 16 - Prob. 3TSCh. 16 - One approach that can be effective in reducing the...Ch. 16 - Doctors and dentists offices frequently schedule...Ch. 16 - Prob. 3CTECh. 16 - Use the assignment method to determine the best...Ch. 16 - Rework Problem 1, treating the numbers in the...Ch. 16 - Assign trucks to delivery routes so that total...Ch. 16 - Develop an assignment plan that will minimize...Ch. 16 - Use the assignment method to obtain a plan that...Ch. 16 - The following table contains information...Ch. 16 - Using the information presented in the following...Ch. 16 - The following table shows orders to be processed...Ch. 16 - A wholesale grocery distribution center uses a...Ch. 16 - The times required to complete each of eight jobs...Ch. 16 - Prob. 11PCh. 16 - A shoe repair operation uses a two-step sequence...Ch. 16 - The following schedule was prepared by the...Ch. 16 - The production manager must determine the...Ch. 16 - A foreman has determined processing times at a...Ch. 16 - Given the information in the following table,...Ch. 16 - Given the following information on job times and...Ch. 16 - Prob. 18PCh. 16 - The following table contains order-dependent setup...Ch. 16 - The following table contains order-dependent setup...Ch. 16 - Prob. 21PCh. 16 - Given this information on planned and actual...Ch. 16 - Given the following data on inputs and outputs at...Ch. 16 - Determine the minimum number of workers needed,...Ch. 16 - Determine the minimum number of workers needed,...Ch. 16 - Determine the minimum number of workers needed,...Ch. 16 - Prob. 1CQ
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, operations-management and related others by exploring similar questions and additional content below.Similar questions
- What are the advantages and disadvantages of the shortest processing time (SPT) rule?arrow_forwardGiven the projects displayed in Table 18.21, if SPT is used to sequence the jobs, what isthe average flow time of the projects (in hours)?arrow_forwardGiven the projects displayed in Table 18.21, if FCFS is used to sequence the jobs, whatis the average flow time of the projects (in hours)?arrow_forward
- What are the benefits and drawbacks of the shortest processing time rule (SPT)?arrow_forwardKindly helparrow_forwardCurrently 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.arrow_forward
- Given the projects displayed in Table 18.21, if SPT is used to sequence the jobs, what isthe average inventory of the projects (in projects)?arrow_forwardGiven the following information on job times and due dates. Job Job Time(Hours) Due Date(Hours) a 3.5 7 b 2.0 6 c 4.5 18 d 5.0 22 e 2.5 4 f 6.0 20 a-1. Determine the optimal processing sequence using (1) First come, first served, (2) Shortest processing time, (3) Earliest due date, and (4) Critical ratio. Sequence for First come, first served Sequence for Shortest processing time Sequence for Earliest due date Sequence for Critical ratio a-2. For each method, find the average job flow time and the average job tardiness. (Round your answers to 2 decimal places.) First Come, FirstServed Shortest ProcessingTime Earliest Due Date Critical Ratio Average flow time Average job tardinessarrow_forwardAn 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?arrow_forward
- Assume the jobs displayed in Table 18.22 need to be processed on a single resource andare sequenced with the WSPT rule. What is the average flow rate of the jobs (in jobs perminute)?arrow_forwardWorkPro is a small manufacturer. It uses a job process for production. The following sample of jobs are listed in the order that they were received. Job Due Date Operation Time P 5 1 Q 20 8 R 8 5 S 11 6 T 3 12 When the shortest operating time (SOT) rule is applied to the sample of jobs, the resulting sequence is: A. Choos the following answer choice. T, P, R, S, Q R, S, T, P, Q P, Q, R, S, T P, R, S, Q, T B. In the WorkPro example above, average flow time for the sample of jobs when sequenced by the shortest operating time (SOT) rule is approximately: 19.8 14.2 4.8 6.4 C. In the WorkPro example above, average lateness for the sample of jobs when sequenced by the earliest due date (EDD) rule is approximately: Group of answer choices 10.4 4.8 7.8 5.8 D. Using the sample of jobs in the WorkPro example above, the shortest operating time (SOT) rule appears more attractive than the earliest due date (EDD) rule…arrow_forwardEight jobs have arrived in the following order: Job Processing Time Due Date 1 25 11 12 9 2 3 4 5 6 7 8 9 5 11 st 4 10 7 16 6 18 16 Find and compare the performance measures for the following sequencing rules using the Excel Sequencing template. Round your answers to two decimal places. A. Process in the order they have arrived 24 42 Average Flow Time Lateness Tardiness Average B. Shortest processing time The SPT sequence is 4, 2, 8, 6, 1, 5, 3, 7 Flow Time Lateness Tardiness Average Earliest due date The EDD sequence is 4, 2, 3, 8, 5, 6, 1, 7 Flow Time Lateness Tardinessarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Practical Management ScienceOperations ManagementISBN:9781337406659Author:WINSTON, Wayne L.Publisher:Cengage,
Practical Management Science
Operations Management
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:Cengage,
Inventory Management | Concepts, Examples and Solved Problems; Author: Dr. Bharatendra Rai;https://www.youtube.com/watch?v=2n9NLZTIlz8;License: Standard YouTube License, CC-BY