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Question 6 (9 marks) A project manager has compiled a list of major activities that will be required to install a new computer system. The duration of each activity can be reduced by a maximum of two weeks. The crashing cost for each week is provided in the table below: Crashing Costs Activity Immediate predecessor(s) Normal 1st Week 2nd Week Duration (weeks) 5 $8 $15 B A 6 7 22 BE 3 17 25 D 3 9 21 E D 7 8 8 F 5 10 21 G F 5 15 23 H E, G 5 12 24 End C, H a) Determine the minimum-cost crashing if the goal is to shorten the project by three weeks. b) Assume the project manager does not want to crash more than two activities. Which activity will you pick in order to reduce the project duration as much as possible in the most economical way)? Compute the new project duration and crashing cost