Consider a retailing firm with a net profit margin of 3.7%, a total asset turnover of 1.81, total assets of $44.9 million, and a book value of equity of $17.4 million. a. What is the firm's current ROE? b. If the firm increased its net profit margin to 4.2%, what would be its ROE? c. If, in addition, the firm increased its revenues by 23% (while maintaining this higher profit margin and without changing its assets or liabilities), what would be its ROE? + a. What is the firm's current ROE? The ROE using the DuPont Identity is %. (Round to one decimal place.)