Exercise 10-20 Presented below is selected Information for three regional divisions of Medina Company Divisions Contribution margin Controllable margin Average operating North $299, 100 $139,500 West $501,000 $362,000 $1,810,000 15% South $399,000 $208,500 $1,390,000 Minimum rate of return $930,000 13% 9 % Compute the return on investment for each division. North Division West Division South Division LINK TO TEXT Compute the residual income for each division North Division West Division South Division Asume that each division has an investment opportunity that would provide a rate of return of 16 (1) IF RO is eed to measure performance, which division or divisions will probably make the additional investment? Miname is used to measure performance, which division or divisions will probably make the additional investment