Pessimistic Time Activity Optimistic Time Most Likely Time 8 2 2 A 5 8 N B 10 4 4 D 2 N 2 2. 2. 5 14 E F 15 3 6 G 8 2 5 11 H 5 8 1 3 15 6 Activities A, B and C can start simultaneously, activity D follows Activity A while E follows B. Activities D and E are followed by Activity G while F is dependent on C. H depends on D and E while I depends on F and G. Find the : a) Expected duration of each activity b) The critical activities c) Time taken for the completion of the project