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Net Present Value-Unequal Lives Bunker Hill Mining Company has two competing proposals: a processing mill and an electric shovel. Both pleces of equipment have an initial investment of $800,474. The net cash flows estimated for the two proposals are as follows: The estimated residual value of the processing mill at the Ind of Year 4 is $340,000. Determine which equipment should be favored, comparing the net present values of the two proposals and assuming a minimum rate of return of 15%. Use the present value table appearing above