Consider the following data for three divisions of a company, X, Y, and Z: X Y Z Divisional: Sales Operating Income Investment in assets $ 1,379,000 159,900 481,000 $ 894,000 96,900 761,300 $ 4,540,000 268,100 3,815,800 The return on investment (ROI) for Division Z is: (Round your percentages to one decimal place.)