A$.$Construct the AON network for this problem.

B$.$ Determine the ES$,$ EF$,$ LS$,$ LF times for each activity. Construct a box alongside each activity.

Activity Duration ES EF LS LF

A $90909$

B $2911911$

C $129211325$

D $521262126$

E $621272127$

F $827352735$

G $335383538$

H $29113638$

I $838463846$

C$.$ Construct a table which determines the slack for each activity.

Activity Slack

A $0$

B $0$

C $0$

D $0$

E $0$

F $0$

G $0$

H $25$

I $0$

d$.$ Which activities are on the critical path? Explain how you know this.

e$.$ What is the time of the critical path?

f$.$ What is the slack time for activity F$?$ What is the importance of this value?