4. Given the data and information that follow, compute the total direct cost for each project duration. If the indirect costs for each project duration are $90 (15 time units), \$70 (14), \$50 (13), \$40 (12), and \$30 (11), compute the total project cost for each duration. What is the optimum cost-time schedule for the project? What is this cost? 4. Given the data and information that follow, compute the total direct cost for each project duration. If the indirect costs for each project duration are $90 (15 time units), \$70 (14), \$50 (13), \$40 (12), and \$30 (11), compute the total project cost for each duration. What is the optimum cost-time schedule for the project? What is this cost