Problem $17-7($Static$)$

Three recent college graduates have formed a partnership and have opened an advertising firm. Their first project consists of activities listed in the following table. Use Table B$.$

TIME IN DAYS

Activity Immediate

Predecessor Optimistic Most Likely Pessimistic

A $567$

B $8811$

C A $6811$

D $91215$

E C $569$

F D $567$

G F $237$

H B $445$

I H $578$

End E$,$ G$,$ I