Using Excel solver please!

35. The following table provides the information necessary to construct a project network and project crash data: Activity a b c a Activity Time (weeks) Normal Crash 16 8 14 9 8 6 5 4 2 6 4 10 7 15 10 Activity Cost Normal Crash $2,000 $4,400 1,000 1.800 700 600 1,300 1,500 3,000 800 1.600 3,000 4.500 5,000 8,000 CD Activity Predecessor (1,2) (1,3) (2.4) (2.5) (3.5) b (3,6) b (4.6) (5,6) 500 d a 4 e f g h de a. Construct the project network. b. Manually crash the network to 28 weeks. c. Formulate the general linear programming model for this network. d. Formulate the linear programming crashing model that would crash this model by the maximum amount