Honestly, there is no正确的答案, even has two formulas to calculate

来源: cyberbug 于 2012-12-18 20:16:35 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (0 bytes)
回答: 正确的答案应该是$.40. 由 WSLama 于 2012-12-18 20:14:47
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