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Business, 08.10.2020 02:01 sihamabdalla591

You just realized that you are disposing 800 L/year of water to the city sewer that has 0.5 wt% gold particles. A design engineer tells you that you can separate out all the gold particles with a highspeed centrifuge with 0.3 m diameter. If you purchase a centrifuge to separate the gold and sell it, the centrifuge will last 7 years. Alternatively, someone offers a 12-year contract to pay you $100/L for the untreated water. If you assume a prevailing interest rate of 4%, compounded annually, which option should you choose

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