Re: [計量] 請問幾題

看板GRE (GRE入學考試)作者 (= =)時間16年前 (2009/10/08 20:49), 編輯推噓0(000)
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※ 引述《nightA (in dispute)》之銘言: : The table above shows a certain store's bicycle inventory where : a,b,c,and d represent the number of bicycles in each category.If : there are 1/2 as many red bicycles as blue bicylces in the store 紅色腳踏車是藍色腳踏車的1/2---->紅色腳踏車佔全部的1/(1+2)=1/3 : and twice as many 3-speed red bicycles as 10-speed red bicycles, 紅色腳踏車裡面3-speed是10-speed的兩倍---->10-speed佔紅色腳踏車的1/(1+2)=1/3 : what fraction of the number of bicycles in the inventory are 10- : speed red bicycles? 紅色10-speed的腳踏車佔全部腳踏車的1/3*1/3=1/9 : (A)1/9 (B)1/6 (C)2/9 (D)1/4 (E)1/3 : ┌────┬────┬────┐ : │ │ │ │ : │ bicycle│ 3-speed│10-speed│ : ├────┼────┼────┤ : │ red │ a │ b │ : ├────┼────┼────┤ : │ blue │ c │ d │ : └────┴────┴────┘ (答案給A可是我覺得是4/9) : ----------------------------------------------------------------------------- : Column A Column B : The fraction of a The fraction of a : minute represented day represented by : by 45 secondsn 16 hours 45秒鐘在一分鐘(60秒)內佔的比例=45/60=3/4 16小時在一天(24小時)中佔的比例=16/24=2/3 A>B : (答案給A可是我覺得是B) : 我左邊算8/6 右邊算9/6 : 是我誤解題目的意思嗎???@@ : ----------------------------------------------------------------------------- : 以上兩題感謝大家了>"< --          幹你媽的快來收集我阿!        ─ ≡ ◤ ◥ ◤        ─ ⊙ ⊙ ─        ─ ○ ─        -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.112.243.187
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