※ 引述《esther730 (esther)》之铭言： : 题目是 : suppose that in response to claim that result in physical injury , an insurance : company is responsible for making 25 annual payments. the first payment , to : be made now , wil be 50,000 . after that , the payment will increase annual : for inflation , at a rate of 6% per year . the real interest rate is 4% per : year . calculate the present value of these 25 payment. : 解答是812,348 : 我的疑问是inflation 6% 不用计入计算吗? 今天又做到下一回第6题 题目很类似 the first payment will occur on Jan 1, 2008,and the final payment will occur on Jan 1,2031 . the first payment will be 100,000 , after that , the payment will increase annually for inflation , at a rate if 5% per year. the real interest rate is 3% per year . find the present value these future payments as of Dec 31,2005. 解答是 1,491,363 详解的算法是名目利率=1.05*1.03-1 去算 两者的不同点在於? 为何上题可以不考虑 inflation? --

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