i need explanation also

2018 2019 2020 $000 1000 $000 1100 $000 1200 Sales Cost of Goods Sold 590 627 672 270 286 264 EBIT Net Profit after tax 189 200 185 154 164 186 Current Assets Inventory Current Liabilities 107 120 138 53 53 60 Total Liabilities 173 192 198 Total Shareholder's Equity 822 800 661 Required: a) Based on the information in the above table, calculate the following ratios: Current Ratio, Quick Ratio, Gross profit margin, Profit margin on sales (use EBIT), Inventory turnover (days), Return on Equity, and Debt Equity ratio