Exercise 3-12 (Algo) ROI analysis using the DuPont model LO 3 Required: a. Firm D has net income of $40,800, sales of $1,360,000, and average total assets of $680,000. Calculate the firm's margin, turnover, and ROI. b. Firm E has net income of $205,200, sales of $2,280,000, 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 $340,000, 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 F has ROI of 60.00 %, average total assets of $340,000, and turnover of 4.00. Calculate the firm's sales, margin, and net Income. Net income Sales Margin