Normal Activity Predecessor Duration (days) Cost ($) A 2 60 Crash Duration (days) Cost ($) 1 120 Cost of Crashing ($ /day) B 4 90 1 360 210 4 150 2 D 2 30 1 60 E 2 120 1 B-C-D . F 4 180 3 300 420 60 G C-D 1 1 Normal Cost 60 690 Write on the a) (5 points) Complete the right column (Cost of Crashing) of the table. answer sheet the cost of crashing ($/day) for each activity. b) (10 points) Draw the network of the project (activity-on-arc). (Note that predecessor in the table means immediate predecessor). Write on the answer sheet 1. the slack time of each activity. Which activities are critical? 2. What is the project normal duration? 3. Identify ALL critical paths. Early Late Slack Activity Start Finish Start Finish Time B C D E F G