Final answer:
An NPV of zero implies that the project's IRR is equal to the required rate of return, meaning the investment neither adds nor subtracts value for the investor relative to other investment opportunities with the same required rate of return.
Step-by-step explanation:
When the Net Present Value (NPV) is zero, it indicates that the required rate of return is equal to the project's internal rate of return (IRR). This means that the cash flows generated by the project, when discounted at the required rate of return, provide exactly enough return to cover the initial investment and the opportunity cost of capital. The question does not provide enough details to determine a specific numerical answer, as more information about the cash flows and the timing of those cash flows would be required. However, it can be summarized that an NPV of zero signifies that the investment is expected to yield a return that is exactly equal to the investor's desired rate of return, meaning the investor is indifferent between taking on the project and choosing another investment offering the same return.