ROI RI The following information for the year is available for Leffingwell Industries average assets invested, $11,480,000; sales, $31,400,000, and expenses, $27,600.000 a. Calculate return on investment Note: Round percentage to one decimal point (.e. round 4.555% to 4.6%) b. Calculate profit margin: Note: Round percentage to one decimal point (ie. round 4.555% to 4.6%). c. Calculate asset turnover. Note: Round amount to one decimal point (e. round 4555 to 4.61 d. Using (b) and (c) prove your answer to a Note: Use rounded amounts from earlier calculations except for ROS which is rounded to the nearest whole percentage As surover frutemaren POL Assuming Leffingwell's cost of capital is 14 percent, compute residual income