a) Draw a project network given information below. Complete the following CPM by determining the ES, EF, LS, LF and Slack. Determine the critical path, total project duration and total cost. (5 points) Activity Predecessor Normal time Normal costCrash time Incremental (days) (s) (days) cost ($/day) 10 120 5 * Crash time = Minim # of day 80 task can be completed in. 40 120 100 20 30 b) Using CPM from part a) and table information crash the project. For each step show, crashed activity/total project duration/total cost. What is the associated cost of the shortage completion time, if our maximum budget is $650? (You can stop the project crash when the cost is above the maximum budget.) (5 points)