Suppose Mr. Agirich has decided to buy a center pivot irrigation system but can't decide between buying a new or used system. Mr. Agirich has determined that the NPV(new) $4,500 and the NPV(used) $2,000. Mr. Agirich wants to choose the new system because it has a higher NPV but is not sure because he has heard that NPV is not the correct criterion for investment comparisons if the investments have different economic lives. Suppose Mr. Agirich learns that you have taken a financial management course at TAMU and has asked you to help him decide whether to buy the new or used irrigation system. He provides the additional information: Mr. Agirich requires at least a 15% pre-tax rate of return on investments, the marginal tax rate is 40 the expected rate of inflation is 3.8% the economic life of the new system is 15 years and the economic life of the used system is 5 years. Should Mr. Agirich buy the new or used irrigation system