Revenue from operations 200,000, purchase 120000, opening stock 12000, closing stock 18000, wages 8000, selling expenses  2000, tangible fixed assets 212000, other current assets 50000, current liblities 30000, equity capital 100000, 7% preference share capital 80000, reserve 10000, 8%debenture 60000. Calculate : working capital ratio, quick ratio,  inventory turnover ratio,  gross profit,  solvency ratio,  operating ratio,  operating profit ratio,  net profit ratio.