14. Here is a CPM network with activity times in weeks (answers in Appendix E): a. Determine the critical path. b. How many weeks will the project take to complete? c. Suppose F eould be shortened by two weeks and B by one week. How date? 15. Here is a network with the activity times shown in days: a. Find the critical path: b. The following table shows the normal times and the crash times, alongtwith the associated costs for efrch activity. If the project is to be shortened by four days, show which activities, in order of reduction, would be shortened and the resulting cost. 16. The home office billing department of a chain of department stores prepares monthly inventory reports for use by the stores' purchasing agents. Given the following information, use the critical path method to determine: a. How long the total process will take. b. Which Jobs can be delayed without delaying the early start of any