1) Computer Hardware Development, Inc. (better known as CHAD - also the President and CEO's name) is developing a new laptop computer for McCombs students. Activity Label Predecessor(s) Activity Design Laptop Time (Wks) A - 21 Build Prototype B A 5 Evaluate Design C A 7 Test Prototype D B Write Manual E C, D 5 Prep Production F C, D 00 Test Production G E, F 2 The project network is shown below. A(21) B(5) D(2) F(8) C(7) E(5) G(2) A-C-F-G (a) (15 Points) Determine the critical path(s). & A-B-D-F-G Activity Time Earliest Earliest Latest Latest Slack On the Label (Wks) Start Finish or Start Finish or Critical Time Completio Time Completio Path? n Time n Time Yes or No A 21 0 21 0 21 0 Yes B 5 21 26 21 26 0 Yes C 7 21 28 21 28 0 Yes D 2 26 28 26 28 0 Yes E 5 28 33 31 36 3 Yes F LL 8 28 36 28 36 0 Yes G 2 36 38 36 38 0 Yes (b) (10 Points) How many weeks can Write Manual (Activity Label E) be delayed and not impact the project completion date? (c) (10 Points) Write Manual (Activity Label E) now has a duration of 8 weeks, what are the critical activities? (d) (15 Points) From the following information, determine the cost to crash the project to the shortest possible duration. Activity Activity Predecessor(s) Time Minimum Label Per Week Crash (Wks) Time Cost Design Laptop A 21 - 18 $200 Build Prototype B A 5 3 $100 Evaluate Design C A 7 10 5 $250 Test Prototype D B 2 1 $300 Write Manual E C, D 5 5 NA (d) (15 Points) From the following information, determine the cost to crash the project to the shortest possible duration. Activity Activity Predecessor(s) Time Minimum Per Week Crash Label (Wks) Time Cost Design Laptop A - 21 18 $200 Build Prototype A 5 3 $100 Evaluate Design C A 7 5 $250 Test Prototype D B 2 1 $300 Write Manual E C, D 5 5 NA OM 235 4-2 Homework-5 Prep Production F C, D 00 8 6 $150 Test Production G E, F 2 1 $300