a. Determine the critical path. b. How many weeks will the project take to complete? c. Suppose F could be shortened by two weeks and B by one week. How would this affect the completion date? 13. 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, along with the asso- ciated costs for each activity. Activity Normal Time Crash Time 2 Normal Cost $7,000 5,000 9,000 3,000 2,000 4,000 5,000 Crash Cost $ 8,000 7,000 10,200 4,500 3,000 7,000 8,000 mo Non AN If the project is to be shortened by four days, show which activities, in order of reduction, would be shortened and the resulting cost. 14. 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 informa- tion, 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 subsequent activity, Job Immediate Time