计算题可能用到的系数：(F/P，5%，6) =1.340   (P/F，5%, 6) =0.746(F/A，5% 6

计算题可能用到的系数：(F/P，5%，6) =1.340   (P/F，5%, 6) =0.746
(F/A，5% 6) =6.802   (P/A，5%,6) =5.076
(F/P，8%，5)=1.469   (P/F，8%,5)=0.681
(F/A，8%，5) =5.867   (P/A，8%，5)=3.993
某项投资预计6年后可以收获80，000元，年利率为5%。
要求：计算该项投资的现值。

【正确答案】：P=F×(P/F，i，n)
=80,000×(P/F，5%，6)
=80,000×0.746
=59,680（元）