*Just need help with part C*

13. A construction project is broken down into the following 10 activities: Activity Immediate Predecessor 2 1 1 4 1 5 2,3 6 3 7 4 8 5 9 6,7 10 8,9 a. Draw the network diagram. b. Find the critical path. C. If activities 1 and 10 cannot be shortened, but activities 2 through 9 can be shortened to a minimum of one week each at a cost of $10,000 per week, which activities would you shorten to cut the project by four weeks? Time (weeks) 424 4 3 562357 Activity 1 2 3 4 5 6 7 8 9 10 Network Diagram 1 4 wiks Immediate Predecessor Time (weeks) Possible shortened time (weeks) n/a 4 1 1 2 min 1 wk 1 4 min 1 wk 1 3 min 1 wk 2,3 5 min 1 wk 3 6 min 1 wk 4 2 min 1 wk 5 3 min 1 wk 6,7 5 min 1 wk 8,9 7 / A 2 2 WKS 3 4 wks 4 3 wks 5 5 WKS le wks 7 2 wks 8 3 wks 9 5 wks 10 7 wks Cost: $10,000/wk Cost: $10,000/wk Cost: $10,000/wk Cost: $10,000/wk Cost: $10,000/wk Cost: $10,000/wk Cost: $10,000/wk Cost: $10,000/wk Possible Paths: 1-2-5-8-10: 1-3-5-8-10: 1-3-6-9-10: 1-4-7-9-10 Critical Path: 1-3-6-9-10 7227 21 23 26 21 26 weeks *For part c: 22 weeks*