Activity Time (weeks) Immediate Predecessor(s) A 3 2 B A A 6 C D C 2 E A 3 F B 3 G H 5 1 3 2 2 1 FH j J 1 Question 3: For the project given in Question 1, we found some activities can be crashed using additional resources. The following table shows the normal time, crash time, normal cost and crash cost for each activity: Time (weeks) Cost ($) Activity Normal Crash Normal Crash A 3 2 20,000 21,500 B 2 1 15,000 16,000 6 5 22,000 23,000 D 2 1 10,000 10,750 E E 3 1 12,000 F 3 1 1 18,000 G 5 3 21,000 24,000 H 1 1 5,000 5,000 1 3 2 10,000 11,000 J 2 1 8,000 9,000 Interpretation of the table: In the above table for activity A, normal time 3 weeks, crash time 2 weeks, normal cost $20,000, and crash cost $21,500. It means, A will take 3 weeks with a cost of $20,000 under normal conditions and it can be completed in 2 weeks if additional resources are added. The cost to complete A in 2 weeks is $21,500. 13,000 19,000 Find how to crash the project completion time found in Question 1 by 3 weeks (i.e., shorten the project completion time by 3 weeks) at minimum cost. a. Write down what activities are to be crashed. b. What is the total cost to crash the project by 3 weeks