Question

The information for project X is shown below. What are the critical path and the completion time of the project?

			Crashing Costs
Activity	Preceding	Normal Time	1st Week	2nd Week
K	—	8 weeks	$4100	—
L	K	6 weeks	3250	—
N	K	1 week	450	450
M	L	5 weeks	3000	3500
J	N	4 weeks	500	—
Q	J,M	6 weeks	4000	4000

		KLMQ, 25 weeks
		KLNMJQ: 25 weeks
		KNJQ, 25 weeks
		KNJQ, 30 weeks
		KLMQ, 30 weeks

The information for project X is shown below. What is your recommendation if the imposed penalty is $3500 for each week the project is late and dead line is week 24?

			Crashing Costs
Activity	Preceding	Normal Time	1st Week	2nd Week
K	—	8 weeks	$4100	—
L	K	6 weeks	3250	—
N	K	1 week	450	450
M	L	5 weeks	3000	3500
J	N	4 weeks	500	—
Q	J,M	6 weeks	4000	4000

		Crash activity M by one week.
		Crash activity N by one week.
		The project does not need to be crashed because it ends before the deadline.
		Do not crash the project because the penalty cost is higher than the minimum crashing cost.
		Crash activity L by one week.

Answer 1

Answer: Critical path = K-L-M-Q ; Project duration = 25 weeks

Answer: Crash Activity M by one week