The following data pertain to British Isles Aggregates Company, a producer of sand, gravel, and cement, for the year just ended.

Sales Revenue: 7,000,000

Cost of Goods Sold: 2,660,000

Operating expenses 3,920,000

Average invested capital: 1,400,000

Compute the company's sales margin, capital turnover and ROI (return on investment)

Sales Margin: ________

Capital turnover: ________

ROI: __________