Note: For all the problems, calculate the dCost, dDays, dCost/dDays, direct and indirect costs. Please show all of your work (table, network, calculation steps, etc.) and graph the final direct, overhead, and total cost. Also show your optimum decision and the minimum total cost on the graph. 1) Find the "least time" solution (shortest duration) for the following network having overhead costs of $500/ day. 2) Completely crash the following network schedule assuming that the direct costs of the activities between normal and crash costs are linear, and find the optimum time and least cost. Overhead Costs =$75/ day