A project for improving a billing process has the following precedence relationships and activity times:

Activity	Activity Time (weeks)	Immediate Predecessor(s)
A	5
B	8
C	5	A
D	12	B, C
E	10	B
F	4	D
G	7	E
H	7	F, G

b. Calculate the slack for each activity. Which activities are on the critical path?

Activity	Activity Time (weeks)	On criticalpath?	Slack (weeks)
A	5	No Yes	?
B	8	Yes No	?
C	5	Yes No	?
D	12	Yes No	?
E	10	Yes No	?
F	4	No Yes	?
G	7	Yes No	?
H	7	Yes No	?

CS 10 E 8 I F