For its three investment centers, Gerrard Company accumulates the following data: I II III Sales $2,000,000 $4,000,000 $4,000,000 Controllable margin 1,400,000 2,000,000 3,600,000 Average operating assets 5,000,000 8,000,000 10,000,000 The centers expect the following changes in the next year: (I) increase sales 15%; (II) decrease costs $400,000; (III) decrease average operating assets $500,000. Compute the expected return on investment (ROI) for each center. Assume center I has a controllable margin percentage of 70%