Question: Here are the data for a time-cost CPM scheduling model analysis. The time is in days and the costs include both direct and indirect costs.

Here are the data for a time-cost CPM scheduling model analysis. The time is in days and the costs include both direct and indirect costs.

Activity Immediate Predecessor Normal Time Crash Time Normal Cost Crash Cost
A None 3 2 $200 $450
B A 4 3 $300 $600
C A 2 1 $200 $300
D B and C 3 2 $500 $550
E D 3 1 $500 $900

a. What are the total time of this project?

b. What is the total crash cost?

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