A project has the following activities, with specified precedents and expected durations (in days). How much slack does Activity E have? Activity Precedent Duration A 3 B 4.2 C D E F Answer: G H (1) Answer: (0) DE DI F G A A MOO 0000 B B C D E A project has the following activities, with specified precedents and expected durations (in hours). What is the expected project duration? Activity PrecedentDuration A B A B. C B. C 6 6 D E. F 4 4 6.2 8 00 6.0 7.2 4.9 6.0 4.5 7.7 3.9