工程经济学一道题~
Thethreealternativesdescribedbelowareavailableforsupplyingacommunitywatersupplyforthenext50yearswhenalleconomiclives,aswellastheperiodofanalysis,terminates.
CostProjectAProjectBProjectC
ConstructionCost
Year0$20,000,000$10,000,000$15,000,000
Year200$10,000,000$12,000,000
Year350$10,000,0000
MaintenanceCost
Years1-20$70,000$40,000$60,000
Years21-35$80,000$70,000$80,000
Years36-50$90,000$90,000$90,000
Determinewhichprojectispreferredusingthepresentworthmethod.Assumeaninterestrateof4.5%.
以前没学过这是另一门课的题.用presentworthmethod
排版有点乱,费用是3个工程排在一起工程a的建设费用是0年$20,000,000,后面2个阶段都是0.工程b是3个阶段开始都投资$10,000,000,工程c是第35年是0.