network diagram

network diagram
Consider the following data for a project never before attempted by your company:
Activity
Expected Time t2
Immediate Predecessor($)
A
5
–
B
3
–
C
2
A
D
5
B
E
4
C, D
F
7
D
Draw the network diagram for this project.
Identify the critical path and estimate the project’s duration.
Calculate the slack for each activity.