Prepare the ratio analyses listed below for 2020, 2019, and 2018. Show your work.

1. Gross Profit margin
2. Profit margin
3. Return on assets
4. Return on equity
5. Inventory Turnover
6. Accounts Receivable Turnover
7. PPE Turnover
8. Asset Turnover
9. Debt-to-equity
10. Times interest earned
11. Return on Financial leverage
12. Current Ratio
13. Quick Ratio
14. Operating cash flow to current liabilities
15. Working capital