A small manufacturing firm has developed the following list of activities necessary to release a contract for a new plant. The estimated time for the activity G (3-5) is: [ a (optimistic time) = 1, m (most likely time) = 4, and b(pessimistic time) = 7 ] (Note: You’d keep all your worksheets of this problem for the next 4 related questions regarding CPM/PERT). ActivityPredecessor Time (T) Mark A (1-2) -4 B (1-3)-2 C (1-4)-5 D (2-3)A3 E (2-5)A6 F (3-4)B,D3 G (3-5)B,D? (a = 1, m=4, b=7) H (4-6)C,F5 I (5-6)E,G7 What is the total expected completion time of this project?