Peter has $9 more than Paul and Philip's os 1/3 of Peter's.
How much money does each of them if they have a total of $61?
呢條數點做
2007-12-03 6:37 am
回答 (2)
2007-12-03 6:56 am
✔ 最佳答案
Paul ==== XPeter ==== 9 + X
Philip ====(9 + X)1/3
Paul+Peter+Philip = 61
X + (9 + X) + (9 + X)1/3 = 61
7/3X+12 = 61
7/3X = 49
X = 21
Paul has $21
2007-12-02 23:13:55 補充：
Paul has$21Peter has 9 21 = $30Philip has (9 21)1/3 = 10
2007-12-02 23:14:35 補充：
打唔到個
參考: 自己
2007-12-03 6:51 am
Let Peter has 3x, then Paul has (3x-9) and Philip has x
Since they have a total of $61,
3x+(3x-9)+x = 61
7x-9 = 61
7x = 70
x = 10
Therefore, Peter has 3 X 10 =$30, Paul has (3 X10) - 9 = $21, Philip has $10
Since they have a total of $61,
3x+(3x-9)+x = 61
7x-9 = 61
7x = 70
x = 10
Therefore, Peter has 3 X 10 =$30, Paul has (3 X10) - 9 = $21, Philip has $10
參考: me
收錄日期: 2021-04-24 10:47:59
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071202000051KK05212