Principles of Operations Management: Sustainability and Supply Chain Management (10th Edition)
10th Edition
ISBN: 9780134181981
Author: Jay Heizer, Barry Render, Chuck Munson
Publisher: PEARSON
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Question
Chapter 15, Problem 20P
Summary Introduction
To determine: Theschedule that finishes sooner among first come first served and Johnson’s rule using Gantt chart.
Introduction: First come first served (FCFS) is the kind of
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Q. 3
What is the total makespan from Question 1?
Question 1: Four floral arranging jobs are to be carried out across three stations: A (Arrange), B (Bag), C (crop) shown. The station sequences and job times in minutes are shown below, along with the due dates for each job. Using an "earliest due date" job dispatching priority rule, which, if any, of the jobs in will be late?
Answer was Job 4
Group of answer choices
a. 100
b. 130
c. 150
d. 170
e. 200
Question one:
Suppose a radiology department uses FCFS to determine how to sequence patient x-rays. Assuming these data are
representative, compare between FCFS and other scheduling rules should the radiology department be using and why
Processing Time
(Minutes)
Due Time (Minutes
from Now)
Patient
A
35
140
B
15
180
35
360
D
25
290
E
30
420
F
25
20
G
35
180
H
30
290
20
110
K
25
150
L
15
270
M
30
390
20
220
20
400
P
10
330
Q
10
80
R
15
230
20
370
QUESTION 5 (SCHEDULING: CYCLICAL SCHEDULING)
15.26 Daniel's Barber Shop at Newark Airport is open
7 days a week but has fluctuating demand. Daniel Ball is inter-
ested in treating his barbers as well as he can with steady work
and preferably 5 days of work with two consecutive days off.
His analysis of his staffing needs resulted in the following plan.
Schedule Daniel's staff with the minimum number of barbers.
DAY
MON. TUE. WED. THU. FRI. SAT. SUN.
6
5
5
5
6
4
3
Barbers
needed
Chapter 15 Solutions
Principles of Operations Management: Sustainability and Supply Chain Management (10th Edition)
Ch. 15 - Prob. 1EDCh. 15 - Prob. 1DQCh. 15 - Prob. 2DQCh. 15 - Prob. 3DQCh. 15 - Prob. 4DQCh. 15 - Prob. 5DQCh. 15 - Prob. 6DQCh. 15 - Prob. 7DQCh. 15 - Prob. 8DQCh. 15 - Prob. 9DQ
Ch. 15 - Prob. 10DQCh. 15 - Prob. 11DQCh. 15 - Prob. 12DQCh. 15 - Prob. 13DQCh. 15 - Prob. 1PCh. 15 - Prob. 2PCh. 15 - Prob. 3PCh. 15 - Prob. 4PCh. 15 - Prob. 5PCh. 15 - Prob. 6PCh. 15 - Prob. 7PCh. 15 - Prob. 8PCh. 15 - Prob. 9PCh. 15 - Prob. 10PCh. 15 - Prob. 15PCh. 15 - Prob. 16PCh. 15 - Prob. 17PCh. 15 - Prob. 18PCh. 15 - Prob. 19PCh. 15 - Prob. 20PCh. 15 - Prob. 21PCh. 15 - Prob. 22PCh. 15 - Prob. 23PCh. 15 - Daniels Barber Shop at Newark Airport is open 7...Ch. 15 - Given the following demand for waiters and...Ch. 15 - Prob. 1CSCh. 15 - Prob. 2CSCh. 15 - Prob. 3CSCh. 15 - Prob. 4CSCh. 15 - Prob. 1.1VCCh. 15 - Prob. 1.2VCCh. 15 - Prob. 1.3VCCh. 15 - Prob. 2.1VCCh. 15 - Prob. 2.2VCCh. 15 - Why is seniority important in scheduling servers?Ch. 15 - Prob. 2.4VC
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- Question one: Suppose a radiology department uses FCFS to determine how to sequence patient x-rays. Assuming these data are representative, compare between FCFS and other scheduling rules should the radiology department be using and why Processing Time (Minutes) Due Time (Minutes from Now) Patient A 35 140 B 180 15 35 360 25 290 E 30 420 25 20 G 35 80 30 290 20 110 K 25 15 150 270 M 30 390 20 220 20 400 10 330 10 80 R 15 230 20 370 当 五犯 LEzlolalolclnarrow_forwardQuestion 34 Consider the processing times and priorities for four jobs: Job Processing time (minutes) Weight/Priority (cost per minute) A 10 6 B 2 1 C 50 2 D 16 10 Assume the weighted shortest processing time (WSPT) rule is used. Which job should be processed third? Group of answer choices A B C Darrow_forwardQuestion 4 Sunny Tailors has been asked to make three different types of wedding suits for separate customers. The table below highlights the time taken in hours for (1) cutting and sewing and (2) delivery of each of the suits. Suit 1 2 3 Cut and sew 4 7 6 Deliver 2 7 5 Determine a sequence that will minimize the total completion time for these jobs. Determine the efficiency of the sequences.arrow_forward
- QUESTION 6 The framing department has six jobs waiting to be processed as shown in Table 3 below. It is now time zero and all jobs are ready to begin. Each has only one operation remaining. Table 3 Jobs (In order of arrival) Processing Time Due Date A 5 12 B 7 18 C 8. 14 D 3 10 E 9 22 F 12 17 Using minimum flow time as the evaluation criterion, recommend the best rule to sequence the jobs from the list below: i. FCFS ii. SOT iii. EDD iv. STRarrow_forwardQuestion 1 We assume that One end item needs 2 units L, 1 unit C and 3 units K. One unit L needs 2 units B and 3 units J. One unit C needs 2 units G and 2 units B. One unit K needs 4 units H and 2 units B. Two orders of 40 units and 60 units will be sent at the week 8 and 9. The manager knows that 15 units of B are scheduled to arrive at the beginning of week 4; 10 units of C are scheduled to arrive at the beginning of week 2. Only the component B should be ordered by lot and the lot size is 30. Use tables to make MRPS for end products and components. Item Lead time Amount on hand End item 1 L 2 C 3 K 3 B J G I G H 2|N 3 3 2 10 15 20 30 30 5arrow_forwardQuestion atatchedarrow_forward
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- QUESTION 4 (SCHEDULING: JOHNSON'S RULE) The following schedule was prepared by the production manager of Marymount Metal Shop: Determine a schedule that will result in the earliest completion of all jobs on this list. CUTTING POLISHING Job ABCDEFG (ii) (iii) (iv) Start 0 2 6 11 15 17 20 Finish 2 6 11 15 17 20 21 Start 2615232 11 20 24 Finish 5 9 13 20 23 24 28 What is the optimal sequence? Draw the time-phased chart. What is the total completion time? What is the total idle time at Polishing work centre?arrow_forwardquestion atatchedarrow_forwardQuestion attachedarrow_forward
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