Exercise 3-12 (Algo) ROI analysis using the DuPont model LO 3 Required: a. Firm D has net income of $59,400, sales of $1,320,000, and average total assets of $660,000. Calculate the firm's margin, turnover, and ROI. b. Firm E has net income of $198,000, sales of $2,200,000, and ROI of 18%. Calculate the firm's turnover and average total assets. c. Firm F has ROI of 60.00%, average total assets of $330,000, and turnover of 4.00. Calculate the firm's sales, margin, and net income. Complete this question by entering your answers in the tabs below. Required A Required B Required C Firm D has net income of $59,400, sales of $1,320,000, and average total assets of $660,000. Calculate the firm's margin, turnover, and ROI. Margin % Turnover ROI % < Required A Required B >