Warren Company has two divisions with the following results: Sales revenue $ Ashland 442,000 Erie $1,120,000 Divisional expenses $ 262,000 $ 842,000 Segment income $ Average invested assets 180,000 $1,120,000 $ 342,000 $3,920,000 Warren Company has a hurdle rate of 11.2%. a. Calculate the return on investment for each division. (Round your answers to 2 decimal places.) Ashland Erie Return on investment % % b. Break each division's return on investment down into its component parts using the DuPont method. (Round your profit margin to 2 decimal places and investment turnover to 3 decimal places.) Profit margin Investment Turnover Ashland Erie % % c. Calculate the residual income for each division. (Negative amounts should be indicated by a minus sign.) Ashland Erie Residual Income