(Refer to Problem 13.41.) The simulator in Problem 15.41 will save $600,000 per year in year-0…

(Refer to Problem 13.41.) The simulator in Problem 15.41 will save $600,000 per year in year-0 dollars in experimental costs. (a) What is the after-tax IRR? (b) What is the after-tax IRR if the loan of Problem 15.46 is used to buy the equipment? (c) Graph the IRR for percentages financed from 0% to 90%.