Final answer:
Thornley Machines should implement the project as it is expected to generate a positive return.
Step-by-step explanation:
To determine whether Thornley Machines should implement the project, we need to calculate the net present value (NPV) of the project. The NPV is calculated by discounting the cash flows of the project using the required rate of return. In this case, the initial cost is -$618,000, the annual cost savings are $265,000, and the salvage value is $60,000. After calculating the NPV, if it is positive, the project should be implemented, and if it is negative, the project should be rejected.
Using a 9% rate of return, the NPV can be calculated as follows:
Year 0: -$618,000



NPV = -$618,000 + $243,119.27 + $223,286.01 + $204,711.55
= $52,116.82
Since the NPV is positive, the project should be implemented as it is expected to generate a positive return.