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Maintenance costs of a small bridge with 50-years of expected life, are 1

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Maintenance costs of a small bridge with 50-years of expected life, are 1.000 dolars per year for the first 5 years followed by a 10.000 dolars expenditure in year 15 only and a 10.000 dolar expenditure in year 30 only. If the interest rate 10% per year what is the equivalent uniform annual cost of the bridge over the entire 50 year period? (Note: You need to find the present Value first). a) 682 b) 535 c) 862 2000 e) 1500 Bo? bitrak