Parrott Inc. had the following data at the end of the previous year: Net Sales Revenue $ 6,000,000 Operating Income $ 300,000 Average Total Assets $ 500,000 Mgt Target Rate of Return 30% 1. Calculate the Profit Margin Ratio 2. Calculate the Asset Turnover Ratio 3. Calculate the ROI - Return on Investment 4. Calculate the RI - Residual Income