看板 GMAT 關於我們 聯絡資訊
※ 引述《iamhentai (我是變態)》之銘言: : 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 : 正確答案是4 為什麼不是3 題目問的應該是"剩下的人要多付多少"沒錯吧 : 還是我誤會題目的意思了 看來你真的有誤會到題目囉 題目是說total x元 一開始參加的人有T人 一個人應該付x/T元 但是有S人沒有付錢 所以x元由T-S人去分攤 應此每人要付x/(T-S)元 因此剩下的那些人每人要多負擔 x/(T-S) - x/T 通分一下 答案是4沒錯 -- ..... ..... -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 61.216.6.31
iamhentai:我看成一份x元...真是鬼遮眼了@@ 感謝!! 11/27 19:56