The income from operations and the amount of invested assets in each division of Devon Industries are as follows: Sporting Goods Division: Income from Operations 80,000 Invested assets: 400,000 Health Care Division: Income from Operations: 41,600 Invested Assets: 260,000 Commercial Divsion: Income from Operations: 70,400 Invested assets: 320,000 a. Compute the rate of return on investment for each division. b. Which division is the most profitable per dollar invested