Using the activity table below, construct a CPM/PERT network noting the activity numbers and durations. Identify the critical path through the network, determine the project completion time, and determine the earliest and latest start dates for each node.

Activity Predecessor Time (days)

1 - 2

2 - 8

3 1 3

4 1,2 6

5 3 3

6 3 5

7 4,5,6 10