Given the following tasks, durations and dependencies

Task	Duration (weeks)	Predecessors
A	2	None
B	3	None
C	1	A
D	4	A
E	5	B
F	6	A, D
G	2	A, E
H	4	F
I	2	G,H

a. Create a Gantt chart. How many weeks will it take to complete the project?

b. Create a PERT chart. What is the critical path?