A project involving the installation of a computer system consists of eight acti
ID: 456820 • Letter: A
Question
A project involving the installation of a computer system consists of eight activities. These activities and other relevant data necessary for completion is listed in table below (Time in weeks)
Activity
Immediate Predecessor
Normal Time
Crash Time
Normal Cost
Crash Cost
A
None
3
1
900
1,700
B
None
6
3
2,000
4,000
C
A
2
1
500
1,000
D
B, C
5
3
1,800
2,400
E
D
4
3
1,500
1,850
F
E
3
1
3,000
3,900
G
B, C
9
4
8,000
9,800
H
F, G
3
2
1,000
2,000
a)Draw a precedence diagram for the project and determine the project completion date as well as the critical activities?
b)Crash this project to 16 weeks. What is the additional cost of this project? Explicitly show all the steps of the crashing process.
Activity
Immediate Predecessor
Normal Time
Crash Time
Normal Cost
Crash Cost
A
None
3
1
900
1,700
B
None
6
3
2,000
4,000
C
A
2
1
500
1,000
D
B, C
5
3
1,800
2,400
E
D
4
3
1,500
1,850
F
E
3
1
3,000
3,900
G
B, C
9
4
8,000
9,800
H
F, G
3
2
1,000
2,000
Explanation / Answer
A project involving the installation of a computer system consists of eight acti
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