John has 3 times as many stamps as Peter.If John gives 2 stamps to Peter, then Jotn will has only 2 times as many stamps as Peter.Find the number of stamps Peter has originally.
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f.1超易數 =>
2008-06-14 11:48 pm
回答 (2)
2008-06-14 11:57 pm
✔ 最佳答案
x=Peter, y= John1) y=3x
2) y-2=2x
x=2
Peter have 2 stamps
2008-06-14 16:03:38 補充：
打錯...X= John,,X=Peter..
都係上面哥條式''
計到個x就計到個y'
咁就會計到peter'
2008-06-14 16:03:55 補充：
係y= peter..=.='
參考: me..''
2008-06-15 1:02 am
Let Peter has X stamp
3X-2=2(X+2)
3X-2=2X+4
3X-2X=2+4
X=6
Therefore, Peter has 6 stamps originally.
2008-06-14 17:04:28 補充：
3X-2係John俾左2枚郵票俾Peter,而2(X+2)亦都係John俾左2枚郵票俾Peter
3X-2=2(X+2)
3X-2=2X+4
3X-2X=2+4
X=6
Therefore, Peter has 6 stamps originally.
2008-06-14 17:04:28 補充：
3X-2係John俾左2枚郵票俾Peter,而2(X+2)亦都係John俾左2枚郵票俾Peter
參考: Myself
收錄日期: 2021-04-15 16:31:18
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https://hk.answers.yahoo.com/question/index?qid=20080614000051KK01525