Megamart, a retailer of consumer goods, provides the following information on two of ta departments (each considered an investment center). (1.1) Compute return on investment for each department. (1.2) Using return on investment, which department is most deficient at using assets to generate returns for the company? Sporting goods Electronics (2.1)Assume a target income level of 12.7% of average invested assets. Compute residual income for each department