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水水 · 2021年10月19日

这道题理解用计算机算可以么

  1. CFA I
  2. Quantitative

NO.PZ2018062016000006

问题如下：

Lucy believes that after retirement she will need about $2 million totally for her daily expenses. At present, she has $1million investment at a stated annual interest rate of 2.5%. Assuming compounded daily, how long does it take for Lucy to have enough money for retirement life?

选项：

A.

27.73 years

B.

28.07 years

C.

26.48 years

解释：

A is correct.

EAR=(1+0.025/365)365-1=0.02531

$1million*(1+0.02531)N =$2million, N=27.73 years.

没有用每日365EAR的算法，直接用计算器，FV=2 PV=-1 I/Y=.. PMT=0 CPT-N =27.729,这样和题意是一个意思么

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1 个答案

星星_品职助教 · 2021年10月19日

同学你好，

可以。这种题目就是用计算器算的。你列的公式中，I/Y处填上EAR的数值（不含百分号）即可。

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