Mylab Operations Management With Pearson Etext -- Access Card -- For Operations Management: Sustainability And Supply Chain Management (13th Edition)
13th Edition
ISBN: 9780135225899
Author: Jay Heizer, Barry Render, Chuck Munson
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 11P
The following is a table of activities associated with a project at Rafay Ishfaq’s software firm in Chicago, their durations, and what activities each must precede:
ACTIVITY | DURATION (WEEKS) | PRECEDES | |||
A (start) | 1 | B, C | |||
B | 1 | E | |||
C | 4 | F | |||
E | 2 | F | |||
F (end) | 2 | --- |
- a. Draw an AON diagram of the project, including activity durations.
- b. Define the critical path, listing all critical activities in chronological order.
- c. What is the project duration (in weeks)?
- d. What is the slack (in weeks) associated with any and all noncritical paths through the project?
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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
A (start)
B
C
E
F (end)
Duration
(weeks)
3
2
5
2
2
Activity
A
Precedes
B, C
E
F
F
Suppose that Rafay is only given 7 weeks (instead of 10) 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.
Crash
Cost/Week
Each Activity
Should be Reduced
BY
(weeks)
week(s)
$370
$110
$240
$140
$450
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
E
C
F
F
F
E
(end)
2
2
4
1
3
Activity
Suppose that Rafay is only given 6 weeks (instead of 9) 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.
A
Each Activity
Should be Reduced
BY
(weeks)
$370
$130
$200
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 and what activities each must precede:
Duration (weeks)
Precedes
B, C
E
F
F
Activity
A (start)
What is the total slack for the non critical path(s) in the project?
BOE
C
F (end)
1
2.
2182
This exercise contains only parts b, c, and d.
b) The activities on the critical path are
c) The total project completion time for Rafay Ishfaq's software firm is weeks. (Enter your response as a whole number.)
d) Determine the slack time for each of the activities. (Enter your responses as whole numbers.)
ABC EF
11
Activity Slack Time (weeks)
week(s) (Enter your response as a whole number.)
Chapter 3 Solutions
Mylab Operations Management With Pearson Etext -- Access Card -- For Operations Management: Sustainability And Supply Chain Management (13th Edition)
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