1. To complete the new hotel building project at Vancouver Downtown, Mr. Robert Haas has laid out the seven major activities involved. These activities have been labeled A through Jin the following table, which also shows their estimated completion times (in days) and immediate predecessors.
   1. Draw the network diagram.

Activity	Activity Time (days)	Immediate Predecessor(s)
A	2
B	4	A
C	5	A
D	2	B
E	1	B
F	8	B, C
G	3	D, E
H	5	F
I	4	F
J	7	G, H, I

1. Calculate the critical path for this project.
2. How much slack is in each of the activities G, H, and I?
3. How much free slack is in activities G, H, and I?