Margin, Turnover, Return on Investment Pelak Company had sales of $4,887,000, expenses of $4,443,000, and average operating assets of $3,920,000. Required: 1. Compute the operating income. $ 2. Compute the margin (as a percent) and turnover ratio. If required, round your answers to one decimal place. Margin Turnover % 3. Compute the ROI as a percent. Use the part 2 final answers in these calculations and round the final answer to two decimal places. %