McGee Carpet and Trim installs carpet in commercial offices. Andrea McGee has been very concerned with the amount of time it took to complete several recent jobs. Some of his workers are very unreliable. A list of activities and their optimistic completion time, the most likely completion time, and the pessimistic completion time (all in days) for a new contract are given in the following table.

	Time (days)						Immediate Predecessor(s)		Time (days)						Immediate Predecessor(s)
Activity	a		m		b			Activity	a		m		b
A	4		5		9			G	1		2		3		A, E
B	10		11		12			H	4		6		8		F
C	1		2		3			I	10		11		12		G
D	6		7		8		C	J	15		17		19		C
E	1		3		5		B, D	K	4		8		12		H, I
F	6		10		13		A, E

This exercise contains only parts b, c, and d.

Part 2

b) Determine the total project completion time and the critical path for the project.

Critical path activities are the activities that lie on the longest time path (in terms of time). The critical path follows the activities with slack = 0.

Part 3

Activities on the critical path for the project are