※ 引述《iamhentai (我是变态)》之铭言： : 56. 6461-!-item-!-187;#058&004810 : To celebrate a colleague's retirement, the T coworkers in an office agreed to : share equally the cost of a catered lunch. If the lunch costs a total of x : dollars and S of the coworkers fail to pay their share, which of the : following represents the additional amount, in dollars, that each of the : remaining coworkers would have to contribute so that the cost of the lunch is : completely paid? : 1.x/T : 2.x/(T-S) : 3.Sx/(T-S) : 4.Sx/T(T-S) : 5.x(T-S)/T : 正确答案是4 为什麽不是3 题目问的应该是"剩下的人要多付多少"没错吧 : 还是我误会题目的意思了 看来你真的有误会到题目罗 题目是说total x元 一开始参加的人有T人 一个人应该付x/T元 但是有S人没有付钱 所以x元由T-S人去分摊 应此每人要付x/(T-S)元 因此剩下的那些人每人要多负担 x/(T-S) - x/T 通分一下 答案是4没错 -- 鱼说：你看不见我眼中的泪，ꘊ 因为我在水中..... 水说：我能感觉你的泪，ꘊ 因为你在我的心里..... --

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