Sinclair Companyis considering the purchase of new equipment to perform operations currently being performed on different, less efficient equipment. The purchase price is $250,000, delivered installed. A. Sinclair production engineer estimates that the new equipment will produce savings of $72,000 in labor and other direct costs annually, as compared with the present equipment. She estimates the proposed equipment's economic life at five years, with zero salvage value. The present equipment is in good working order and will last, physically, for at least five more years. The company can borrow money at 9 percent, although it would not plan to negotiate a loan specifically for the purchase of this equipment. The company requires a return of at least 15 percent before taxes on an investment of this type. Taxes are to be disregarded. Questions 1. Assuming the present equipment has zero book value and zero salvage value, should the company buy yhe proposed equipment? 2. Assuming the present equipment is being depreciated at a straight-line rate of 10 percent, that it has a book value of $135,000 (cost, $225,000; accumulated depreciation, $90,000), and has zero net salvage value today, should the company buy proposed equipment? 3. Assuming the present equipment has a book value of $135,0000 and a salvage value today of $75,000 and that if retained for 5 more years its salvage value will be zero, should the company buy the proposed equipment? 4. Assuming the new equipment will save only $37,500 a year, but that its economic life is expected to be 10 years. If other conditions are as described in (1) above, should the company buy the proposed equipment?