Re: [計量] 請教兩題計量

看板GRE (GRE入學考試)作者 ( )時間16年前 (2010/04/02 10:30), 編輯推噓1(100)
留言1則, 1人參與, 最新討論串12/21 (看更多)
※ 引述《Alan655 (用心感覺)》之銘言: : Q1. A1,Lew, and Karen pooled their funds to buy a gift : for friend. A1 contributed $2 less than 1/3 of the : cost of the gift and Lew contributed $2 more than : 1/4 of the cost. If Karen contributed the remaining : $15, what was the cost of the gift? : Ans:36 (可是我一直算22.5...) 三人和買禮物, A出禮物價錢的 1/3少兩元, L出價錢的 1/4多兩元, K出剩餘 的15元,問禮物原價為何? 設禮物原價 x元,則 x = x/3 - 2 + x/4 + 2 + 15,解得 x = 36 : Q2. Four cups of milk are to be poured into a 2-cup : bottle and a 4-cup bottle. If each bottle is to : be filled to the same fraction of its capacity, : how many cups of milk should be poured into the : 4-cup bottle? : Ans:8/3 四杯牛奶要分別裝一個進相當於兩杯大小跟另一個相當於四杯大小的瓶子裡面, 若裝的容量必須要跟瓶子大小城比例,則相當於四杯大小的瓶子要裝多少杯。 四杯按照 1:2的比例去分就好,因此 4 * 2/3 = 8/3 -- ____ _ _ _ _ ____ _ _ ____ _____ ____ (_ _)( \( )( \/ )( ___)( \( )(_ _)( _ )( _ \ _)(_ ) ( \ / )__) ) ( )( )(_)( ) / (____)(_)\_) \/ (____)(_)\_) (__) (_____)(_)\_) -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 58.137.96.10

04/02 10:47, , 1F
第二題我誤會題意了,謝謝
04/02 10:47, 1F
文章代碼(AID): #1BjLQqSs (GRE)
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文章代碼(AID): #1BjLQqSs (GRE)