For its three investment centers, Novak Company accumulates the following data: I II III Sales $2,000,000 $4,000,000 $4,000,000 Controllable margin 1,300,000 1,840,000 3,400,000 Average operating assets 5,000,000 8,000,000 10,000,000 Compute the return on investment (ROI) for each center.

Current Attempt in Progress For its three investment centers, Novak Company accumulates the following data: Compute the return on investment ( ROI ) for each center