Brief Exercise 10-9 For its three investment centers, Gerrard Company accumulates the following data: I II III Sales $2,031,000 $3,937,000 $3,947,000 Controllable margin 895,500 2,663,100 4,812,000 Average operating assets 4,975,000 8,070,000 12,030,000 Compute the return on investment (ROI) for each center. I II III The return on investment % % % Click if you would like to Show Work for this question: