ACTIVITY	IMMEDIATE PREDECESSOR	DURATION (Weeks)
A	-	9
B	-	11
C	A	7
D	A	10
E	B,C	1
F	B,C	5
G	D,E	6
H	D,E	3
I	H	1
J	F,G	2
K	G,I	8

Using the data above:

a) Draw the Pert Network

b) Determine the critical path & project completion time

c) Determine total slack (float) for each activity

d) What is the impact on the project completion if activity F is delayed by 10 weeks?

e) What is the impact if activity D is delayed 4 weeks and activity F delayed 8 weeks?