Return on investment The operating income and the amount of invested assets in each division of Conley Industries are as follows: Operating Income Invested Assets Retail Division $111,300 $530,000 Commercial Division 131,100 570,000 Internet Division 110,500 650,000 a. Compute the return on investment for each division (Round to the nearest whole percentage.) Division Percent Retail Division % Commercial Division 9 Internet Division % b. Which division is the most profitable per dollar invested