Return on investment The operating income and the amount of invested assets in each division of Conley Industries are as follows: Operating Income Retail Division Commercial Division $163,800 85,100 59,500 Invested Assets $780,000 370,000 350,000 Internet Division 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