Using the formulas in Table 4.1 and Costcos financial statement starting on page 115, calculate the following measures of financial performance. Be sure to report items (a) through (e) in percentages (i.e. multiply your result x 100)

1. a. Gross profit margin.

2. b. Operating profit margin.

3. c. Net profit margin.

4. d. Return on stockholders equity.

5. e. Return on assets.

6. f. Times-interest-earned (or coverage) ratio.

7. g. Debt-to-equity ratio.

8. h. Days of inventory.

9. i. Inventory turnover ratio.

10. j. Average collection period.