calculate margin, turnover, return on investment, and residual income

Sud ACCT 2060- Chapter 11 and 12 In Class Bonus Point Chapter 11: 1. EASTAX INC. Contribution Income Statement Total Unit Sales $1,000,000 600,000 400,000 320,000 80,000 32.000 $48,000 $ 50.00 30.00 20.00 16.00 4.00 160 2.40 Variable expenses Contribution Margin Fixed expenses Net Operating Income Income Taxes @ 40% Net Income Additional information: Average Operating Assets Required Rate of Return $500,000 10% Calculate margin, turnover, Return on Investment (ROI) and Residual Income (RI)