Tu corporation is investigating automating a process by purchasing a machine for $423,000 that would have a 9 year useful life and no salvage value. by automating the process, the company would save $112,000 per year in cash operating costs. the new machine would replace some old equipment that would be sold for scrap now, yielding $27,000. the annual depreciation on the new machine would be $47,000. the simple rate of return on the investment is closest to: a. 15.4%b. 16.4%c. 26.5%d. 11.1%