Firm J has net income of $77,605, sales of $935,000, and average total assets of $467,500. Required: Calculate Firm J's margin, turnover, and return on investment (ROI). Margin Choose Numerator: Choose Denominator: Turnover Choose Numerator: Choose Denominator: II Return on Investment Choose Numerator: Choose Denominator: II II Margin Margin Turnover Turnover = Return on Investment = Return on Investment =