lynn_品职助教 · 2023年04月03日
嗨,爱思考的PZer你好:
经过我们教研组老师讨论,这个例题的4个答案都是存在问题的,但是原版书一直没有勘误,所以我们就保留这道题,讲解了解题方法,相近的练习,请参考Reading 6 课后题18。
2430000还恰好能四舍五入差不多。
这道题是Reading 6 ■ Principles of Asset Allocation的example11
我们先查表,得到
Module A and that the appropriately adjusted expected return for that module is 2.3%. Discounting a US$500,000 annual cash flow, inflated by 2% a year from Year 2 onwards。
也就是5年现金流是500,000, 回报为2.3%, inflation 是2%求现值,第二年才有Inflation。
PMT = 500,000, N= 5, I = 1.023/1.02-1
算出来是2478092,因为第二年才inflation 所以得出的数字需要除以1.02 也就是2429502。投资我们取千位也就是2430000。
They want an 85% chance of being able to maintain their current expenditures over the ensuing 25 years, which they see as a reasonable estimate of their joint life expectancy.
----------------------------------------------虽然现在很辛苦,但努力过的感觉真的很好,加油!