4. The following results for the current year are for the Calvin Division of Stinson Enterprises: Sales $400,000 180,000 Variable costs Fixed expenses 160,000 Average operating assets are $500,000. The firm's minimum required rate of return is 10 percent, the weighted average cost of capital is 8 percent, and the tax rate is 30 percent. Required: a. Calculate profit margin for the division. b. Calculate asset turnover for the division. c. Calculate return on investment (ROI) for the division. d. Calculate EVA for the division. e. Below are forecasted sales and operating costs date of a potential new investment opportunity that Stinson Enterprise wants Calvin Division manager to evaluate: Annual sales Annual variable operating costs $80,000 $45,000 $15,200 Incremental fixed expenses The new investment requires a capital outlay of $180,000. If you are Calvin Division manager and you are allowed to make all capital investment decision, will you invest in this new investment opportunity? Explain your decision. f. Discuss the pros and cons of using ROI as a performance measurement tool.