Production and Operations Analysis, Seventh Edition
7th Edition
ISBN: 9781478623069
Author: Steven Nahmias, Tava Lennon Olsen
Publisher: Waveland Press, Inc.
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Chapter 10.3, Problem 8P
a.
Summary Introduction
Interpretation: The direct cost of the project is to be computed after the successive reduction of the project time by one week.
Concept Introduction: Network diagram is a graphical representation of tasks and events happening in a project. It depicts the workflow and is used to compute the total duration of the project.
B.
Summary Introduction
Interpretation: The optimal project completion time and the total project cost are to be computed when the indirect costs amount to $150.
Concept Introduction: Network diagram is a graphical representation of tasks and events happening in a project. It depicts the workflow and is used to compute the total duration of the project.
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Students have asked these similar questions
The following is a table of activities associated with a project at Rafay Ishfaq's software firm in Chicago, their durations, what activities each must precede and the crash cost to reduce duration
per week:
Activity Duration (weeks) Precedes Crash Cost/Week
A (start)
B
C
E
F (end)
3
2
6
2
3
Activity
B, C
E
F
F
A
B
Suppose that Rafay is only given 9 weeks (instead of 12) to complete the project. By how many weeks should each activity be crashed in order to meet the deadline? Assume that you can crash an
activity down to 0 weeks duration.
$380
$130
$240
Each Activity
Should be Reduced
BY
(weeks)
0 week(s)
week(s)
$150
$400
The following is a table of activities associated with a project at Rafay Ishfaq's software firm in Chicago, their durations, what activities each must precede and the crash cost to reduce duration per week:
Activity Duration (weeks) Precedes Crash Cost/Week
A (start)
B, C
B
$370
$120
C
$200
E
$150
F (end)
$420
Suppose that Rafay is only given 9 weeks (instead of 11) to complete the project. By how many weeks should each activity be crashed in order to meet the deadline? Assume that you can crash an activity down to 0 weeks duration.
Each Activity
Should be Reduced
BY
(weeks)
week(s)
3
2
5
2
3
Activity
A
E
F
F
A project consists of seven activities, lettered A through F below. For each activity, the estimated normal time in number of weeks, crash
time, normal cost, crash cost, and its preceding activity are given.
Normal Time Crash Time
Normal Cost
Crash Cost
Immediate
Activity
(weeks)
(weeks)
(Peso)
(Peso)
Predecessor(s)
A
4
3
2,000
2,600
B
1
2,200
2,800
3
500
500
D
8
4
2,300
2,600
A
E
6
900
1,200
В
F
3
3,000
4,200
G
4
1,400
2,000
D, E
If you wish to reduce the time required to complete this project by one week, which activity should be crashed?
O Activity C
O Activity D
O Activity E
O Activity B
O Activity A
Chapter 10 Solutions
Production and Operations Analysis, Seventh Edition
Ch. 10.2 - Prob. 1PCh. 10.2 - Prob. 2PCh. 10.2 - Prob. 3PCh. 10.2 - Prob. 4PCh. 10.2 - Prob. 5PCh. 10.2 - Prob. 6PCh. 10.3 - Prob. 7PCh. 10.3 - Prob. 8PCh. 10.3 - Prob. 9PCh. 10.3 - Prob. 10P
Ch. 10.4 - Prob. 11PCh. 10.4 - Prob. 12PCh. 10.4 - Prob. 13PCh. 10.4 - Prob. 14PCh. 10.4 - Prob. 15PCh. 10.4 - Prob. 16PCh. 10.5 - Prob. 17PCh. 10.5 - Prob. 18PCh. 10.5 - Prob. 19PCh. 10.5 - Prob. 20PCh. 10.5 - Prob. 21PCh. 10.6 - Prob. 22PCh. 10.6 - Prob. 23PCh. 10.6 - Prob. 24PCh. 10.6 - Prob. 25PCh. 10 - Prob. 26APCh. 10 - Prob. 27APCh. 10 - Prob. 28APCh. 10 - Prob. 29APCh. 10 - Prob. 30AP
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