10. a. The IRR is the interest rate that makes the NPV of the project equal to zero. The equation for the IRR of Project A is: 0 = –$78,500 + $43,000 / (1 + IRR) + $29,000 / (1 + IRR)2 + $23,000 / (1 + IRR)3 + $21,000 / (1 + IRR)4 Using a spreadsheet, financial calculator, or trial and error to find the root of the equation, we find that: IRR = 20.70% The equation for the IRR of Project B is: 0 = –$78,500 + $21,000 / (1 + IRR) + $28,000 / (1 + IRR)2 + $34,000 / (1 + IRR)3 + $41,000 / (1 + IRR)4 Using a spreadsheet, financial calculator, or trial and error to find the root of the equation, we find that: IRR = 18.73% Examining the IRRs of the projects, we see that the IRRA is greater than the IRRB, so the IRR decision rule implies accepting Project A. This may not be a correct decision, however, because the IRR criterion has a ranking problem for mutually exclusive projects. To see if the IRR decision rule is correct or not, we need to evaluate the project NPVs. b. The NPV of Project A is: NPVA = –$78,500 + $43,000 / 1.11+ $29,000 / 1.112 + $23,000 / 1.113 + $21,000 / 1.114 NPVA = $14,426.54 And the NPV of Project B is: NPVB = –$78,500 + $21,000 / 1.11 + $28,000 / 1.112 + $34,000 / 1.113 + $41,000 / 1.114 NPVB = $15,012.82 The NPVB is greater than the NPVA, so we should accept Project B. c. To find the crossover rate, we subtract the cash flows from one project from the cash flows of the other project. Here, we will subtract the cash flows for Project B from the cash flows of Project A. Once we find these differential cash flows, we find the IRR. The equation for the crossover rate is: 0 = $22,000 / (1 + R) + $1,000 / (1 + R)2 – $11,000 / (1 + R)3 – $20,000 / (1 + R)4 Using a spreadsheet, financial calculator, or trial and error to find the root of the equation, we find that: R = 12.21% At discount rates above 12.21% choose Project A; for discount rates below 12.21% choose Project B; indifferent between A and B at a discount rate of 12.21%.
10. a. The IRR is the interest rate that makes the NPV of the project equal to zero. The equation for the IRR of Project A is:<br><br> 0 = –$78,500 + $43,000 / (1 + IRR) + $29,000 / (1 + IRR)2 + $23,000 / (1 + IRR)3 <br> + $21,000 / (1 + IRR)4 <br><br> Using a spreadsheet, financial calculator, or trial and error to find the root of the equation, we find that:<br><br> IRR = 20.70%<br><br> The equation for the IRR of Project B is: <br><br> 0 = –$78,500 + $21,000 / (1 + IRR) + $28,000 / (1 + IRR)2 + $34,000 / (1 + IRR)3 <br> + $41,000 / (1 + IRR)4<br> <br> Using a spreadsheet, financial calculator, or trial and error to find the root of the equation, we find that:<br><br> IRR = 18.73%<br><br> Examining the IRRs of the projects, we see that the IRRA is greater than the IRRB, so the IRR decision rule implies accepting Project A. This may not be a correct decision, however, because the IRR criterion has a ranking problem for mutually exclusive projects. To see if the IRR decision rule is correct or not, we need to evaluate the project NPVs.<br><br> b. The NPV of Project A is:<br><br> NPVA = –$78,500 + $43,000 / 1.11+ $29,000 / 1.112 + $23,000 / 1.113 + $21,000 / 1.114 <br> NPVA = $14,426.54<br> <br> And the NPV of Project B is:<br><br> NPVB = –$78,500 + $21,000 / 1.11 + $28,000 / 1.112 + $34,000 / 1.113 + $41,000 / 1.114 <br> NPVB = $15,012.82<br><br> The NPVB is greater than the NPVA, so we should accept Project B.<br><br>C。為了找到交叉率,我們減去其他項目的現金流量現金從一個項目流動。在這裡,我們將扣除項目B,在現金一旦我們發現這些差的現金流,我們發現IRR項目A的流動現金流。對於交叉率的公式為:<br><br>0 = $ 22,000多個/(1 + R)+ $ 1,000 /(1 + R)2 - $ 11,000 /(1 + R)3 - $ 20,000 /(1 + R)4 <br> <br>使用電子表格,金融計算器或者試錯找到方程的根,我們發現:<br><br>R = 12.21%<br><br>折現率12.21上方%的人選擇項目A; 對於折現率低於12.21%的人選擇項目B; 以12.21%的折扣率A和B之間漠不關心。
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