※ 引述《domeself (be strong)》之銘言： : Q10 : A certain quantity is measured on two different scales, : the R-scale and the S-scale, that are realated linearly. : Measurements on the R-scale of 6 and 24 correspond to : measurements on the S-scale of 30 and 60, respectively. : What measurement on the R-scale corresponds to a : measurement of 100 on the S-scale? : A.20 : B.36 : C.48 : D.60 : E.84 : ANS:C 這一題就像溫度換算一樣 24R-6R αR-6R ------- = ---------- 整理 60S-30S 100S-30S 18 α-6 ----=--------整理 30 100-30 α-6= 42 -->α=48 選C : Q24 : From Leland's gross pay of p dallars last week, t percent : was deducted for taxes and then s dollars was deducted : for savings. What amount of Leland's gross pay last week : remained after these two deductions? : (1)p-s=244 : (2)pt=7,552 : ANS:C Gross Pay= p(1-t%)-s -->p-s-pt% 即可得解 : 麻煩各位大大 算了很久算不出來 感謝 :) 這兩題的KEY: 一個是要看出題目想要問的東西，另一個是把題目給的條件式子化 其實我覺得AT數學幾乎可以用這兩招解。 -- 時間管理 金錢管理 政治不說 飲食管理 迷信不說 裝備管理 色情不說 睡眠管理 五大管理 三不說 --

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