The green division of Ivanhoe Company reported the following data for the current year: Top management is unhappy with the investment centre's return on investment. It asks the manager of the green division to submit plans to improve the ROI in the next year. The manager believes it is reasonable to consider each of the following independent courses of action. (a) Calculate the return on investment for the current year. (Round ROI to 1 decimal place, e.g. 1.5\%.) (b) Using the ROI formula, calculate the ROI under each of the proposed courses of action. (Round ROI to 1 decimal place, e.g. 1.5\%