Question 3 (PERT and Resource allocation & leveling) - 10 marks (a) The estimated activity times and manpower required for a project is as indicated in Table 2. Draw a schedule AON network to represent the project. Determine the expected duration to complete the project and the critical path. (5 marks) Table 2 Activity Immediate Activity Manpower Predecessors Expected Requirement Time (te) A 6 7 B A 8 5 A 8 6 D A 6 8 E B 7 5 F 6 10 G DF 6 10 H C, E 5 8 I G 8 6 J F, I, H 6 8 (b) Construct the Gantt chart and resource allocation diagram based on the schedule. Then level the resources if the manpower available is limited to twenty (20)