The total project cost includes project direct cost and indirect cost. The (indirect) cost associated with sustaining the project is $4,000 per week. What is the optimal crashing plan? Calculate the lowest total project cost.
 

Activity A B C D E F G H I Immediate Predecessor None A A C B, D E, F F G, H Normal Time (Weeks) 9 5 3 6 4 7 5 6 8 Crash Time (Weeks) 6 3 2 4 2 4 4 2 5 Total: Normal Cost S 20,000 6,000 15,500 32,000 5,000 17,500 30,000 26,000 40,000 $192,000 Crash Cost $ 35,000 9,000 20,000 36,000 10,000 25,000 34,000 30,000 58,000 $257,000 Activity A B C D E F G H I Immediate Predecessor None A A C B, D E, F F G, H Normal Time (Weeks) 9 5 3 6 4 7 5 6 8 Crash Time (Weeks) 6 3 2 4 2 4 4 2 5 Total: Normal Cost S 20,000 6,000 15,500 32,000 5,000 17,500 30,000 26,000 40,000 $192,000 Crash Cost $ 35,000 9,000 20,000 36,000 10,000 25,000 34,000 30,000 58,000 $257,000