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1. In the design of a water treatment plant, the design engineer has a choice of selecting a constant speed pump or an adjustable-frequency drive

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1. In the design of a water treatment plant, the design engineer has a choice of selecting a constant speed pump or an adjustable-frequency drive (AFD) pump. The capital and operating costs for each pump are shown below. Assume an interest rate of 6.00% and a 10-year life. Which pump should the engineer recommend? (10 points)

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