Practical Management Science
6th Edition
ISBN: 9781337406659
Author: WINSTON, Wayne L.
Publisher: Cengage,
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The table below contains information about an environmental clean-up project in the township of Hiles. Shorten the project
schedule . Assume that project indirect costs and penalty costs are negligible. Identify activities to crash while minimizing the additional crash costs.
threethree
weeks by finding the minimum-cost |
Activity
|
Normal Time
(weekweeks)
|
Crash Time
(weekweeks)
|
Cost to Crash
($ per
weekweek)
|
Immediate Predecessor(s)
|
|
A
|
55
|
44
|
300300
|
None
|
|
B
|
77
|
44
|
5050
|
None
|
|
C
|
77
|
66
|
300300
|
A
|
|
D
|
77
|
66
|
250250
|
A
|
|
E
|
11
|
11
|
long dash—
|
B
|
|
F
|
33
|
33
|
long dash—
|
C, D
|
|
G
|
55
|
44
|
200200
|
D, E
|
|
H
|
44
|
22
|
200200
|
F
|
|
I
|
22
|
22
|
long dash—
|
G
|
Part 2
Fill in the table below with the activity times after crashing to show the resulting schedule. (Enter your responses as whole numbers.)
|
Activity
|
Time according to schedule
(weekweeks)
|
Activity
|
Time according to schedule
(weekweeks)
|
|
A
|
enter your response here
|
F
|
enter your response here
|
|
B
|
enter your response here
|
G
|
enter your response here
|
|
C
|
enter your response here
|
H
|
enter your response here
|
|
D
|
enter your response here
|
I
|
enter your response here
|
|
E
|
enter your response here
|
|
Transcribed Image Text:The table below contains information about an environmental clean-up project in the township of Hiles. Shorten the project three weeks by finding the minimum-cost schedule. Assume that project
indirect costs and penalty costs are negligible. Identify activities to crash while minimizing the additional crash costs.
Activity
A
BCDE
с
F
U I
G
H
I
Activity
A
B
Normal Time Crash Time
(weeks) (weeks)
4
5
4
6
6
1
3
4
2
2
CDE
с
N n ܢ ܢ ܝ ܚ ܗ v P
7
7
7
3
5
4
2
Time according to
schedule (weeks)
Cost to Crash
($ per week)
Question Viewer
300
50
300
250
| | |
Fill in the table below with the activity times after crashing to show the resulting schedule. (Enter your responses as whole numbers.)
200
200
Immediate Predecessor(s)
Activity
F
G
H
I
None
None
A
A
B
C, D
D, E
F
G
Time according to
schedule (weeks)
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