The following list represents CPM network of a project. Normal time Crash time Activity Normal cost Crash cost Predecessor (day) (days) A 8 6 $1,000 $1,600 B 10 7 $2,000 $2,600 C 5 4 $500 $1,000 A D E 92 8 $4,000 $4,200 A, B 1 $3,000 $4,000 C, D Suppose that the project manager is willing to spend any amount of cost to complete the project as fast as possible. What will be the project duration after the crashing (i.e., crashing to the maximum extent without concerning the crashing cost)? Your Answer: