Presented here is selected information for three regional divisions of Pina Colada Company. Divisions North West South Contribution margin $300,000 $499,700 $399,500 Controllable margin $140,000 $360,000 $210,000 Average operating assets $1,000,000 $1,440,000 $1,500,000 Minimum rate of return 13 % 14 % 8 % (6!) Compute the return on investment for each division. North Division % West Division % South Division %