Two machines, each with a service life of \(5 \mathrm{yr}\), have the following cost comparison. If the effective interest rate is \(10 \% / \mathrm{yr}\), which machine is more economical?

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A B First cost $25,000 $15,000 Uniform end of-year 2,000 4,000 maintenance Overhaul, end of third year 3.500 Salvage value 3,000 Benefit from quality as a uniform 500 end-of-year amount