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

Activity	Activity Time (weeks)	Immediate Processors
A	2	--
B	10	--
C	8	A
D	12	B,C
E	11	B
F	4	D
G	7	E
H	6	F,G

-Calculate the slack for each activity. Which activities are on the critical path? Solve for "?".

Activity	Activity Time (weeks)	On Critical Path? (Answer yes or no)	Slack (Weeks)
A	2	?	?
B	10	?	?
C	8	?	?
D	12	?	?
E	11	?	?
F	4	?	?
G	7	?	?
H	6	?	?