Exercise 10-20 Presented below is selected information for three regional divisions of Medina Company. Divisions North West South Contribution margin Controllable margin Average operating assets $300,000 $139,500 $500,000 $360,800 $399,300 $210,000 $930,000 $1,640,000 $1,400,000 Minimum rate of return 11 % 15 % 9 % Compute the return on investment for each division. North Division 15 % West Division 22 % South Division 15 % LINK TO TEXT Compute the residual income for each division. North Division West Division $ South Division $ CALCULATOR PRINTER VERSION