根据题意计算出实际利率r160000＝43000+43000*（p/a,r,3）可得(P/A,r,3)=2.7209查表可得r=5% (P/A,r,3)=2.723 r (P/A,r,3)=2.7209r=6% (P/A,r,3)=2.673r-5%=(2.7209-2.723)/(2.673-2.723)*(6%-5%)r=5.04%=5%
