当cash flow小于规定的值时 ？

NO.PZ2022010501000004 问题如下 Use the information in the following table to answer this question (amounts in €):Calculate the rate of return for this portfolio for January, February, March, anthe first quarter of 2019 using revaluing for large cash flows methology (assume “large” is finegreater th5%). January: RJan= (208,000 − 200,000)/200,000 = 4.00%February: RFeb1- 15 = (217,000 − 208,000)/208,000 = 4.33% RFeb16- 28= (263,000 − 257,000)/257,000 = 2.33% RFeb1-28 = [(1 + 0.0433) × (1 + 0.0233)] − 1 = 6.76%March: RMar1- 21 == (270,000 − 263,000)/263,000 = 2.66% RMar22- 31= (245,000 − 240,000)/240,000 = 2.08% RMar1- 31= [(1 + 0.0266) × (1 + 0.0208)] − 1 = 4.80%Quarter 1: RQT1 = [(1 + 0.0400) × (1 + 0.0676) × (1 + 0.0480)] − 1 = 16.36% 老师，如果2月16日的现金流入从40000变为4000（即小于5%），进而使得2月16日的fair value post cash flow变为221000，其余条件都不变。请问二月份的收益率如何计算，谢谢老师

NO.PZ2022010501000004 问题如下 Use the information in the following table to answer this question (amounts in €):Calculate the rate of return for this portfolio for January, February, March, anthe first quarter of 2019 using revaluing for large cash flows methology (assume “large” is finegreater th5%). January: RJan= (208,000 − 200,000)/200,000 = 4.00%February: RFeb1- 15 = (217,000 − 208,000)/208,000 = 4.33% RFeb16- 28= (263,000 − 257,000)/257,000 = 2.33% RFeb1-28 = [(1 + 0.0433) × (1 + 0.0233)] − 1 = 6.76%March: RMar1- 21 == (270,000 − 263,000)/263,000 = 2.66% RMar22- 31= (245,000 − 240,000)/240,000 = 2.08% RMar1- 31= [(1 + 0.0266) × (1 + 0.0208)] − 1 = 4.80%Quarter 1: RQT1 = [(1 + 0.0400) × (1 + 0.0676) × (1 + 0.0480)] − 1 = 16.36% revaluing for large cash flows methology 是老师上课讲的sub portfolio return 的方法吗？对这些方法的名字有些困惑，看这个描述我还以为这道题是让用Mofieetz做呢

NO.PZ2022010501000004 问题如下 Use the information in the following table to answer this question (amounts in €):Calculate the rate of return for this portfolio for January, February, March, anthe first quarter of 2019 using revaluing for large cash flows methology (assume “large” is finegreater th5%). January: RJan= (208,000 − 200,000)/200,000 = 4.00%February: RFeb1- 15 = (217,000 − 208,000)/208,000 = 4.33% RFeb16- 28= (263,000 − 257,000)/257,000 = 2.33% RFeb1-28 = [(1 + 0.0433) × (1 + 0.0233)] − 1 = 6.76%March: RMar1- 21 == (270,000 − 263,000)/263,000 = 2.66% RMar22- 31= (245,000 − 240,000)/240,000 = 2.08% RMar1- 31= [(1 + 0.0266) × (1 + 0.0208)] − 1 = 4.80%Quarter 1: RQT1 = [(1 + 0.0400) × (1 + 0.0676) × (1 + 0.0480)] − 1 = 16.36% (assume “large” is finegreater th5%).这个是5%乘以多少？来判断增加的现金流是否符合标准呢？basis是哪个值

NO.PZ2022010501000004 问题如下 Use the information in the following table to answer this question (amounts in €):Calculate the rate of return for this portfolio for January, February, March, anthe first quarter of 2019 using revaluing for large cash flows methology (assume “large” is finegreater th5%). January: RJan= (208,000 − 200,000)/200,000 = 4.00%February: RFeb1- 15 = (217,000 − 208,000)/208,000 = 4.33% RFeb16- 28= (263,000 − 257,000)/257,000 = 2.33% RFeb1-28 = [(1 + 0.0433) × (1 + 0.0233)] − 1 = 6.76%March: RMar1- 21 == (270,000 − 263,000)/263,000 = 2.66% RMar22- 31= (245,000 − 240,000)/240,000 = 2.08% RMar1- 31= [(1 + 0.0266) × (1 + 0.0208)] − 1 = 4.80%Quarter 1: RQT1 = [(1 + 0.0400) × (1 + 0.0676) × (1 + 0.0480)] − 1 = 16.36% 请问老师，Feb 16-28 0f return = (263000-40000-217000)/217000-1=2.76%，这样算为什么不对？书上的例题也是这样算的呀