Required:

1. Firm D has net income of $32,600, sales of $970,000, and average total assets of $480,000. Calculate the firm's margin, turnover, and ROI.
2. Firm E has net income of $78,000, sales of $1,400,000, and ROI of 14%. Calculate the firm's turnover and average total assets.
3. Firm F has ROI of 12.60%, average total assets of $1,873,000, and turnover of 1.70. Calculate the firm's sales, margin, andnet income.