(1)小明的爸爸打算在该小区买一套四楼的住宅16000x120x(1+5%)=201600(2)付款最高 16000x120x(1+10%)最少16000x120x(1-8%)相差 16000x120x(1.1-0.92)=16000x120x0.18=345600
