network diagram

network diagram
Paul Silver, owner of Sculptures International, just initiated a new art project. The following data are available for the project:
Activity
Activity Time (days)
Immediate Predecessor($)
A
4
–
B
1
–
C
3
A
D
2
B
E
3
C, D
Draw the network diagram for the project.
Determine the project’s critical path and duration.
What is the slack for each activity?