The Quick Manufacturing Company, a large profitable corporation, may replace a production machine tool. A new machine would cost $38,000, have an 8-year useful life, and have no salvage value. For tax purposes, 3-year MACRS depreciation would be used. The existing machine tool cost $40,000 4 years ago, and it has been completely depreciated. The tool could be sold now to a used equipment dealer for $10,000 or be kept in service for another 8 years. It would then have no salvage value. The new machine tool would save about $9000 per year in operating costs compared to the existing machine. Assume a 20% combined state and federal tax rate. Compute the before-tax rate of return on the replacement proposal of installing the new machine rather than keeping the existing machine. 10% 18% 20% O 28%