PLEASE answer Question 5. Q4 is additional information needed for Q5.

4. (25 Marks) You are a project manager charged with redesigning a product and its packaging. Using the information in the Table below, do the following: a) Construct a CPM network for the project b) Compute the ES, EF, LS and LF times for each activity c) What is the critical path or the project? How long will it take to complete? # Duration (Weeks) Predecessor(s) 1 6 2 3 2 3 1 4 2 2 5 4 3 6 Activity Redesign product Design new packaging Obtain materials for redesigned product Obtain materials for new packaging Make redesigned product Make new packaging Package redesigned product Test-market redesigned product Revise redesigned product Revise new packaging Launch revised product and packaging 1 4 7 1 5,6 8 6 7 9 3 8 10 1 8 11 1 9.10 5. (15 Marks). You have now been asked to investigate whether you can shorten the project in Question 4 by two weeks. You have assembled the information about crashing times and crashing costs in the Table below. a) What activities should be crashed and by how much in order to achieve a reduction of two weeks in the completion time of the project? b) What will be the increase in the project cost? # Shortest Duration (Weeks) 4 Cost to Attain Shortest Duration ($ 000s) 30 12.5 1 2 1 3 2 8 4 2. 1.5 7 5 1.5 13 Activity Normal Duration (Weeks) Redesign product 6 Design new 2 packaging Obtain materials for 3 redesigned product Obtain materials for new packaging Make redesigned 4 product Make new packaging 1 Package redesigned 1 product Test-market 6 redesigned product Revise redesigned 3 product Revise new 1 packaging Launch revised 1 product and packaging 6 6 0.5 0.5 7 6 8 4 22 9 2 15 10 0.5 7.25 11 1 N/A