某项目计划分为立项、实施和运维三个阶段。财务部给该项目的预算金额不超过80万元。项目经理估算立项阶段的成本为20万元，实施阶段的成本为50万元，运维阶段的成本为30万元。若用自底向上法对该项目的成本进行估算，则估算值应为 （ ） 万元。
- A.70
- B.80
- C.90
- D.100
正确答案及解析
正确答案
解析
自底向上法，就是先估算单个工作包的成本，然后将这些详细成本汇总得到更高层的成本。所以将立项、实施和运维三个阶段成本相加就得到项目估算值，该值为100。
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