Required: a. Firm A has a margin of 10%, sales of $620,000, and ROI of 18%. Calculate the firm's average total assets. b. Firm B has net income of $74,000, turnover of 1.30, and average total assets of $930,000. Calculate the firm's sales, margin, and ROI. c. Firm C has net income of $138,000, turnover of 1.91, and ROI of 23.50%. Calculate the firm's margin, sales, and average total assets. Complete this question by entering your answers in the tabs below. Required A Required B Required c Firm A has a margin of 10%, sales of $620,000, and ROI of 18%. Calculate the firm's average total assets. (Round "Turnover" to 1 decimal place.) Average total assets Required A Required B Required c Firm B has net income of $74,000, turnover of 1.30, and average total assets of $930,000. Calculate the firm's sales, margin, and ROI. (Round "Margin" and "ROI" answers to 1 decimal place.) Sales Margin ROI % % Required A Required B Required C Firm C has net income of $138,000, turnover of 1.91, and ROI of 23.50%. Calculate the firm's margin, sales, and average total assets. (Round "Margin" answer to 1 decimal place and use the rounded answer for the subsequent computations.) % Margin Sales Average total assets