试题与答案

安徽蔬博会期间,某投资商到和城开发区投资72万元建一座蔬菜加工厂,第一年共支出1

题型:解答题

题目:

安徽蔬博会期间,某投资商到和城开发区投资72万元建一座蔬菜加工厂,第一年共支出12万元,以后每年支出增加4万元.从第一年起每年蔬菜销售收入50万元,设f(n)表示第n年的纯利润总和(f(n)=前n年的总收入-前n年的总支出-投资额)该厂从第几年开始盈利?

若干年后,该投资商准备开发新项目,对该厂有两种处理方案:

①年平均利润达到最大时,以48万元出售该厂.

②纯利润总和达到最大时,以16万元出售该厂.

请您帮他决策一下,哪种方案更合算.

答案:

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