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6. Analyze and solve the following project network. The numbers in the top cell of the boxes represent the time in weeks required to perform each activity. (16 Marks) a. Using the two-step procedure consisting of forward and backward passes, determine the ES/EF and LS/LF of each activity. Also, determine how long it will take to complete the entire project. 11 13 3 4 13 2 17 2 13 17 8 2. 25 17 B D 2 17 25 2 F C E - It will take 25 weeks to complet 10 the project 12 12 2 4 16 17 3 13 B b. Which activities are on the critical path? Calculate slack times for any activity that is not on the critical path. c. If duration of activity E increases by one week, will the completion of the project be delayed? Explain. d. If activity E takes six weeks to complete, will the completion of the project be delayed? If so, what is the new project duration