The document discusses a capital investment project being considered by AirJet Best Parts, Inc. to purchase a new machine. It provides cash flows for the project and asks the student to calculate the net present value (NPV) using a required rate of return of 15%. It then asks the student to calculate the company's weighted average cost of capital (WACC) to use as the discount rate and recompute the NPV. The student finds the NPV is positive using 15% but is asked to recompute it using the WACC to determine if the earlier recommendation to accept the project is still adequate.