The following table provides the information necessary to construct a project network and project Crash data: Predecessors Activity A Normal Time Crash Time (weeks) (weeks) 14 9 - B 8 6 A A 5 4 C D Normal Cost Crash Cost $1,000 $1,800 $500 $700 $600 $1,300 $1,500 $3,000 $800 $1,600 $3,000 $4,500 $5,000 $8,000 B 4 2 E B 6 4 10 F G 7 D,E,F 15 10 a Construct the project's network. Under normal time, what are the project's duration, project total cost and the critical path? b. Calculate the crashing cost per week for each activity