[計量] 學測滿級分也算錯的GRE數學題(1)
GRE 數學應該花時間在易錯題, 英文題,
和陷阱題上, 因此在此分享Mason 準備
GRE 計量時所做錯的題目, 相信對大家
有幫助!
Q. Joe is twice as old as Ann. Eight
Years ago, Joe was four times older
than Ann.
Quantity A
Joe's age 6 years ago
Quantity B
Ann's age 6 year from now
(a) Quantity A is greater
(b) Quantity B is greater
(c) The two quantities are equal
(d) 拍共
一開始解題應該沒爭議. Joe的年紀是
Ann的兩倍, 就設Ann為x歲, Joe為2x歲.
八年前Joe的年紀是Ann的四倍, 得一元
一次方程式, 4*(x-8)=2x-8
所以x = 12, Ann現在12歲, Joe 24歲.
Quantity A = 24 - 6 = 18
Quantity B = 12 + 6 = 18
你說, 很簡單啊, 有什麼問題嗎?
有啊! 做到這種簡單的題目, 我就鬆懈,
就眼殘看成Ann's age 6 "years ago"
就錯了. 170就沒了...
不要懷疑, 我學測數學十五級分, 就犯
這種白痴的錯, 血淚教訓給大家參考..
大家若有任何問題, 歡迎私訊Mason FB專頁
希望能幫助大家GRE高分, 殺爆ET$!
https://www.facebook.com/mason0218
Mason
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