Southwest physicians a medical group practice in Oklahoma City are just being formed. it will need $2 million of total assets to generate $3 million in revenues. Furthermore the group expects to have a total margin of 5 percent. The group is considering two financing alternatives. First, it can use all equity financing by requiring each physician to contribute his or her pro rata share. Second the practice can finance up to 50 percent of its assets with a bank loan. Assuming that the debt alternative has no impact on the expected total margin, what is the difference between the expected return on equity (ROE) if the group financed with 50 percent debt versus the expected ROE if it financed entirely with equity capital?