Step Up Ladders Company provides the following financial​ information: Income from operations $ 200 comma 000 Interest expense 48 comma 000 ​Gains/(losses) on sale of equipment 2 comma 500 Net income 149 comma 500 Total assets at Jan. 1 2 comma 700 comma 000 Total assets at Dec .31 3 comma 300 comma 000 Calculate return on investment based on the information given above.​ (Round your answer to two decimal​ places.)