Required information Exercise 13-33 Improving ROI (LO 13-2, 13-3) [The following information applies to the questions displayed below.] The following data pertain to British Isles Aggregates Company, a producer of sand, gravel, and cement, for the year just ended. Sales revenue Cost of goods sold Operating expenses Average invested capital 7,000,000 2,660,000 3,920,000 1,400,000 denotes the British pound sterling, the national monetary unit of Great Britain. Exercise 13-33 Part 1 Required: Compute the company's sales margin, capital turnover, and ROI. Sales margin Capital turnover ROI % %