Question 18 1 pts Which one of the measures below is used to assess a firm's operating efficiency, asset utilization, financial leverage, and provides a measure of profitability? Profit margin Equity multiplier Return on assets O DuPont identity Capital intensity ratio Question 19 1 pts Which one of the following statements is correct concerning ratio analysis? Ratios cannot be used for comparison purposes over extended periods of time. Ratios do not address the problem of size differences among firms. Each ratio has a specific formula that is used consistently by all analysts