Profit margin, investment turmover, and ROT Lewis Company has operating income of 525,296 , invested assets of 5186,000 , and sales of 5316,200 . Use the Dupunt farmilia to cornpute the return on investment, Round your answers to two decimal places. a. Profit margin b. Imvestanent turnover c. Return on investirient Retum on investment The operating income and the amount of invested assets in each division of Stewart Industries are as follows: a. Compute the return on investment for each division. (Round to the nearest whole percentage.) b. Which division is the most profitable per doliar invested