房1: 投入: 110,500+15,000 = 125,500 收益: 1,300*12 = 15, 600 毛回报率: 15,600/125,500 = 12.43% 房2:投入:123,000+4,000 = 127,000 收益: 1,250*12 = 15,000 毛回报率: 15,000/127,000 = 11.81% 和算!