The precedence relations and durations of jobs in a project are given below:
|
Job
|
Predecessors(s)
|
Duration (in days)
|
|
A
|
-
|
2
|
|
B
|
-
|
4
|
|
C
|
A
|
6
|
|
D
|
A
|
8
|
|
E
|
B,C
|
6
|
|
F
|
B,C
|
4
|
|
G
|
F
|
2
|
|
H
|
F
|
8
|
|
I
|
D,E,G
|
6
|
(a) Draw the activity-on-arc project network
(b) Determine all critical path(s) and their duration(s).
(c) Which is the total float for jobs B and D