3. Operating income is $45,000, average operating assets are $600,000, and sales are $450,000. Return on Investment (ROI) will be: 65 (1 Point) 10% 2.5% 7.5% O O 6% 4. If Return on Investment (ROI) is 15%, profit margin is 20%, and sales are $750,000, then average assets are: (hint: first find the asset turnover, and then use that number to find the average assets) (1 Point) $112,500 $150,000 $600,000 $1,000,000