TOPIC: Operation Research

Unit: Network Analysis

QUESTION ONE A small project consisting of eight activities has the following characteristicsi (20 Marks) Activity Time estimates in weeks Preceding Optimistic Mo st likely Pessimistic activity time time (th (tp) A None 2 4 12 B None 10 12 26 C A 8 9 10 D A 10 15 20 E A 7 7.5 11 F B,C 9 9 9 G D 3 3. 5 7 H E,F, G 5 5 5 Required; i) Draw the PERT network for the project. ii) Determine the critical path iii) Prepare the activity schedule for the project showing the EST, EFT, LST, and LFT. iv) Calculate the Total Float, Free Float and Independent Float (2D Marks)