The net present value (NPV) and internal rate of return (IRR) methods of investment analysis are interrelated and are sometimes used together to make capital budgeting decisions. Consider the case of Green Caterpillar Garden Supplies Inc.: Last Tuesday, Green Caterpillar Garden Supplies Inc. lost a portion of its planning and financial data when both its main and its backup servers crashed. The companys CFO remembers that the internal rate of return (IRR) of Project Zeta is 14.6%, but he cant recall how much Green Caterpillar originally invested in the project nor the projects net present value (NPV). However, he found a note that detailed the annual net cash flows expected to be generated by Project Zeta. They are: Year Cash