Below are the data for a Time-Cost CPM Scheduling model analysis. The time is in days...

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Operations Management

Below are the data for a Time-Cost CPM Scheduling modelanalysis. The time is in days and the costs include both direct andindirect costs. If you crash this project to reduce the total timeby two days what is the total time of the project and total cost?Explain. (Note: Cut and paste your Precedence diagram.)
Activity
Immediate
Predecessor
Normal Time
Crash Time
Normal Cost
Crash Cost
A
None
3
2
200
400
B
A
4
3
300
600
C
A
1
---
400
---
D
B and C
3
2
200
250
E
D
2
1
500
600
F
E
2
---
600
---
G
E
3
1
300
450
H
G
1
---
400
---

Answer & Explanation Solved by verified expert

4.2 Ratings (615 Votes)

Based on the given data we find the crash cost per day as shownbelowThe formula for calculating crash cost per day is shown in thetableTotal Normal Cost of the project 2900Based on the predecessor relationship we prepare projectnetwork diagram as shown belowThe above network diagram in the form of formulas is shown belowfor better understanding and referenceThe above See Answer

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Activity	Immediate Predecessor	Normal Time	Crash Time	Normal Cost	Crash Cost
A	None	3	2	200	400
B	A	4	3	300	600
C	A	1	---	400	---
D	B and C	3	2	200	250
E	D	2	1	500	600
F	E	2	---	600	---
G	E	3	1	300	450
H	G	1	---	400	---