Re: [計量] 請問幾題
※ 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>"<
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