假设月利率为R,则:
760000/(P/A,R,60)=17000
(P/A,R,60)=760000/17000=44.70588235
当R=1.02%时,(P/A,1.02%,60)=44.71088644
当R=1.03%时,(P/A,1.03%,60)=44.58951918
使用插值法计算月利率R=(1.02%-1.03%)/((44.71088644-44.58951918)/(44.70588235-44.58951918))+1.03%=1.02041231%
年利率=1.02041231%*12=12.2449%