Quod Erat Demonstrandum

2008/12/04

中一數學題:短加長減

Filed under: Junior Form Mathematics — johnmayhk @ 3:56 下午

考試在即,擬一道中一數學題作溫書之用:

以下是由香港行政長官會同行政會議批准由二○○八年十一月三十日起生效的市區的士新舊收費換算表:

資料來源:運輸署

(a) 試根據上表資料及你的常識,說明二○○八年十二月二日的士堵塞機場事件的因由。
(b) 設 x = 錶示舊收費,y = 新收費,請根據上表資料寫出一些等式表示 xy 的關係。

2 則迴響 »

  1. X’s starting point is $16.0
    Y’s starting point is $18.0
    X added $1.4 per 0.2km.
    y added $1.5 per 0.2km before the price was over $70.
    y added $1.0 per 0.2km after the price was over $70.

    Before the price was over $70:
    Let n be the numbers of the term(not include the starting point)
    16+n(1.4)=x
    18+n(1.5)=y
    the different of the starting point is 2 (18-16)
    And the different price increase 0.1n.
    2+0.1n=the different (y-x)

    After the price was over $70
    Let r be the term that after y is over 70!
    x=63.6 y=69.0
    63.6+r(1.0)=x
    69.0+r(1.4)=y
    the different of the starting point is 5.4(69.0-63.6)
    And the different increasae0.4r
    5.4+0.4r=the different (x-y)

    Hey! Mr.Ng!I think i can’t finish WS1-22!I just do you told me la~ I am doing other exercise!

    迴響 由 byronxgalilee — 2008/12/04 @ 10:15 下午 | 回覆

  2. Sorry! There is an typing error! I just do you told me la->I just finish the question that you told us!

    迴響 由 byronxgalilee — 2008/12/04 @ 10:16 下午 | 回覆


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