Instructions Calculate the internal rate of return on this new machine. Should the investment be accepted? E27.6 (LO 1, 4) BSU Inc. wants to purchase a new machine for $29,300, excluding $1,500 of installation costs. The old machine was purchased five years ago and had an expected economic life of 10 years with no salvage value. The old machine has a book value of $2,000, and BSU Inc. expects to sell it for that amount. The new machine will decrease operating costs by $7,000 each year of its economic life. The straight-line depreciation method will be used for the new machine for a six-year period with no salvage value. C ir de