plant should be built! 8. Sharp Products, a major paper recycling firm, must replace its processing equipment. The only alternatives are the Century Processor, a very efficient but somewhat unreliable machine, and the Sureshot Processor, a less efficient but almost repair-free piece of equipment. The two ma- chines have equal initial costs and have a three-year life. Due to rapid technological change, the machines will have no salvage value at the end of that period. Sharp's engineering de partment has