Figure 12-1. Dempsey Company provided the following information for last year: Operating income $96,000 Sales $235,000 Beginning operating assets $380,000 Ending operating assets $420,000 8. Refer to Figure 12-1. Calculate Dempsey's margin for last year, rounding to two decimal places. 9. Refer to Figure 12-1. Dempsey's turnover ratio for last year was 10. Refer to Figure 12-1. Dempsey's return on investment for last year was