1、已知P=20000,A=4000,n=9,则(P/A,i,9)=P/A=20000/4000=5
运用内插法及逐步测试法计算
已知(P/A,12%,9)=5.3282,(P/A,14%,9)=4.9464
12% 5.3282
i 5
14% 4.9464
(i-12%)/(14%-12%)=(5-5.3282)/(4.9464-5.3282)
i=13.72%
永续年金的折现率:i=A/P
2
实际利率=(1+5%/2)^2-1=5.06%
年实际利率高出名义利率=5.06%-5%=0.6%