Solve the following case and build a diagramming technique using the Critical Path Method (CPM).

The table below lists the time estimates and immediate predecessor(s) for each activity in a product marketing project that is to be scheduled using CPM.

Activity	1	2	3	4	5	6	7	8	9
Activity time (days)	1	4	3	7	5	4	6	9	4
Immediate predecessor	-	1	1	1	2	3, 4	5, 6	4	7,8

1.Draw the CPM network diagram for the project, labeling all activities and times

2.Determine the critical path and the expected duration of the project.

3.Perform a forward pass and backward pass through the network to determine the slack time for each activity