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一道Quanttative analysis 的题,怎么都算不出答案了!!!求高手

Wu Lina, age 26, is planning for retirement. Wu Lina's annual consumption expenditures are currently 30000. She assumes her consumption expenditures will increase with the rate of inflation, which she expects to average 3% until she retires at age 70. Given a life expectancy of 95 years and constant expenditures from her retirement, the amount Wu Lina must accumulate by her retirement date, assuming an 8% rate of return on her retirement account, is closest to:

 

Answer 1,176,000

 分开算,先算退休前最后一年的消费是多少 PV=30000, I/Y=3, N=44,算得退休前最后一年消费FV=110143.57,退休后每一年的消费都为此数字,接着算退休后的总花费的现值即为退休前要积累的资金。PMT=-110143.57,N=25,因退休后花费不变,但是养老回报为8%,所以此处的I/Y=8,计算PV=1,175,757。958

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i=(1+8%)/(1+3%)

计算退休金要要按成BGN。。。不是END

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