Return on investment The operating income and the amount of invested assets in each division of Conley Industries are as follows: Retail Division Commercial Division Internet Division Operating Income $138,000 170,200 125,000 Invested Assets $690,000 740,000 500,000 a. Compute the return on investment for each division. (Round to the nearest whole percentage.) Division Retail Division Commercial Division Internet Division Percent % % % b. Which division is the most profitable per dollar invested? Internet Division