Suppose we had a project with only eight activities, as ilustrated in the next t
ID: 456634 • Letter: S
Question
Suppose we had a project with only eight activities, as ilustrated in the next table. The table also shows our calculated normal activity durations and costs and crashed durations and their costs. As a project manager, you have been asked to do full crashing.
Activity
Normal
Duration Cost
Crash
Duration Cost
A
5 days
$ 1,000
3 days
$ 1,500
B
7 days
700
6 days
1,000
C
3 days
2,500
2 days
4,000
D
5 days
1,500
5 days
1,500
E
9 days
3,750
6 days
9,000
F
4 days
1,600
3 days
2,500
G
6 days
2,400
4 days
3,000
H
8 days
9,000
5 days
15,000
TOTAL COST=
22,450
$ 37,500
Activity
Normal
Duration Cost
Crash
Duration Cost
A
5 days
$ 1,000
3 days
$ 1,500
B
7 days
700
6 days
1,000
C
3 days
2,500
2 days
4,000
D
5 days
1,500
5 days
1,500
E
9 days
3,750
6 days
9,000
F
4 days
1,600
3 days
2,500
G
6 days
2,400
4 days
3,000
H
8 days
9,000
5 days
15,000
TOTAL COST=
22,450
$ 37,500
Explanation / Answer
If all the eight activities are in a simple series, then the full crashing cost will be the sum total of the crash cost of all activities. In that the the project completion time is 34 days and total project cost is $ 37500
However, if the activites have predecessors, then we need to make AON (network) diagram, establish the critical path, and then crash the activities along the critical path. If there's predecessor to activities, please share that information, basis which I can provide the revised solution according to the precedence schedule.
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