Construct a Gantt chart and project network for the following set of activities, compute the length of each path in the network, and indicate the critical path:

Activity Activity Predecessor Time (months)

1 — 4 2 — 7 3 1 8 4 1 3 5 2 9 6 3 5 7 3 2 8 4, 5, 6 6 9 2 5 LO.1