A project involving the installation of a computer system consists of eight activities. These…

A project involving the installation of a computer system consists of eight activities. These activities and other relevant data necessary for completion are listed in the table below (Time in weeks).
Activity
Immediate Predecessor
Normal Time (weeks)
Crash Time (weeks)
Normal Cost
Crash Cost
A
None
3
1
900
1,700
B
None
6
3
2,000
4,000
C
A
2
1
600
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.