Chapter 9 Reducing Project Duration 5. If the Indirect costs for each duration are $1,200 for 16 weeks, $1,130 for 15 weeks, $1,000 for 14 weeks, $900 for 13 weeks, $860 for 12 weeks, $820 for 11 weeks, and $790 for 10 weeks, compute the total costs for each duration. Plot these costs on a graph. What is the optimum cost-time schedule