uired:

1. Firm A has a margin of 13%, sales of $580,000, and ROI of 18%. Calculate the firm's average total assets.
2. Firm B has net income of $76,000, turnover of 1.10, and average total assets of $860,000. Calculate the firm's sales, margin, and ROI.
3. Firm C has net income of $132,000, turnover of 1.81, and ROI of 23.30%. Calculate the firm's margin, sales, and average total assets.