Question: Do Prob 10 8 5 The Lockhead Aircraft Co is ready to begin

Do Prob 10.8-5.
The Lockhead Aircraft Co. is ready to begin a project to develop a new fighter airplane for the U.S. Air Force. The company’s contract with the Department of Defense calls for project completion within 92 weeks, with penalties imposed for late delivery.
The project involves 10 activities (labeled A, B, . . . ,J), where their precedence relationships are shown in the project network below.
Management would like to avoid the hefty penalties for missing the deadline in the current contract. Therefore, the decision has been made to crash the project, using the CPM method of timecost trade-offs to determine how to do this in the most economical way. The data needed to apply this method are given next.
(a) Formulate a linear programming model for this problem.
(b) Use Excel to solve the problem.
(c) Use another software option to solve the problem.

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