PROBLEM 2 (35 points) Consider an engineering economic study considering two mutually exclusive alternatives over an infinite study period. Alternative 1 has a useful life of only 10 years but may be repeated over and over while Alternative 2 has an infinite useful life. Cash flows for Alternative :: Investment Cost EOY 1 to EOY S EOY 6 to EOY 10 . 4.500 1,000 600 "EOY means end-of-year Cash flows for Alternative 2: Investment Cost EOY 1 to Infinity . 12,000 1.350 "EOY means end-of-year Suppose that the MARR is 10% par year with annual compounding. 2a. Use the AW method to evaluate the feasibility of pursuing each alternative and determine which is the better option. 2b. Continuing from question 2a (known feasible alternatives), use the IRR method to determine the preferred alternative. In calculating the IRR, use the interest tables provided and show the interpolation calculation. 2c. Suppose Alternative 1 is no longer an available investment option and that the investment cost for Alternative will change. What is the maximum justifiable investment cost for Alternative 27