Need help with question 5 a and b but posted question 4 as b is tied to that question

4. Consider the two projects whose cash flows are shown in the following table. Years 0 1 2 3 4 5 Project 1 -100 30 30 30 30 30 Project 2 -150 42 42 42 42 42 Find IRRs of the two projects and the NPVs at 5%. Show that the IRR and NPV figures yield different recommendations. Can you explain this? (Luen- berger) 5. In general, we say that two projects with cash flows Xi and Yi, i = 0,1, 2, ..., n, cross if xo Yi. Let P. (d) and P, (d) denote the present values of these two projects when the discount factor is d. Se (a) Show that there is a crossover value c > 0 such that Px (C) = Py(C). (b) For exercise 4, calculate the crossover value c. (Luenberger) 4. Consider the two projects whose cash flows are shown in the following table. Years 0 1 2 3 4 5 Project 1 -100 30 30 30 30 30 Project 2 -150 42 42 42 42 42 Find IRRs of the two projects and the NPVs at 5%. Show that the IRR and NPV figures yield different recommendations. Can you explain this? (Luen- berger) 5. In general, we say that two projects with cash flows Xi and Yi, i = 0,1, 2, ..., n, cross if xo Yi. Let P. (d) and P, (d) denote the present values of these two projects when the discount factor is d. Se (a) Show that there is a crossover value c > 0 such that Px (C) = Py(C). (b) For exercise 4, calculate the crossover value c. (Luenberger)