The manager of a local restaurant is trying to decide whether to buy a charcoal broiling unit or an electric grill for cooking hamburgers. A market study shows customers prefer charcoal broiling, but the unit is more expensive. The managers MARR is 15%. The manager estimates the costs and net benefits from the two alternatives as given below. The useful lives of both the broiler and the grill are five years. Year Broiler Grill 0 -$2500 -$1500 1 750 575 2 750 575 3 750 575 4 750 575 5 750 575 a) What is the rate of return for the broiler? Report your answer to two digits after the decimal point in percent form (xx.xx%). b) Which alternative should the manager choose? You must determine your answer using some form of rate of return analysis.