更新1:
In a computer game, Edward gets 1300 points less than two times William,s score. If they get a total score of 6500 points, who has got a higher score ? By how many points?
有功課唔識
2006-10-29 12:55 am
In a computer game, Edward gets 1300 points less than two times William's score. If they get a total score of 6500 points, who has got a higher score ? By how many points?
回答 (2)
2006-10-29 1:06 am
✔ 最佳答案
假設Edward有X分William有Y分
2Y-X=1300 ------- (1)
X+Y=6500 -------- (2)
由 (1) 得 2Y -1300 = X 代入 (2)
得 (2Y -1300) + Y = 6500
3Y = 6500 + 1300
3Y = 7800
Y = 2600
X = 3900
Edward 得分較高 多了 3900-2600 =1300分
2006-11-01 7:05 am
答得很長，好有心機！
收錄日期: 2021-04-25 16:24:36
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061028000051KK03191