Question：Trippo is considering two projects. Project A has overall cash inflows of $10,000 in years 1 to 3 and its net present value is $24,020. Project B has a net present value of $27,300.
　　By what percentage must project A's cash inflows increase if Trippo will be indifferent between project A and project B?
　　A. 100%
　　B. 113.66%
　　C. 46.07%
　　D. 13.66%
　　The correct answer is:13.66%
　　解析：Trippo will be indifferent between the projects when the PVs are equal, i.e. when project A's PV has increased by $27,300 - $24,020 = $3,280.
　　As a percentage of A's cash flows = 3,280 / 24,020 x 100% = 13.66%