In Finance, please how can I indentify what type of formula to use when it comes to ratios. Current, quick, cash, totat debt, times interest earned, cash coverage, inventory turnover, day sales in inventory, recieveables turnover, days sales in recieveables, total asset turnover, profit margin, return on assets, return on equity, price earnings, and market to book ratios. How can I know which of the above ratio formulas to apply in a question. Sometimes I get stuck and confused when I see questions that asks to use relevant ratios. Please help and explain in simple terms. Thanks.