小豪和子晴共有零用錢120元
子晴的零用錢是子豪的60%
子晴有零用錢多少元
設子晴有零用錢Y元
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一條數學方程式
2010-05-27 2:19 am
回答 (5)
2010-05-27 2:29 am
✔ 最佳答案
(Y÷60%) + Y=120Y÷60%=120 -Y
Y=120×60%-Y×60%
Y=72 - 0.6Y
1.6Y= 72
Y=45
參考: myself
2010-05-28 3:30 am
004:小豪和子晴共有零用錢120元
120-200=80
80more
120-200=80
80more
2010-05-28 2:15 am
設子晴有零用錢y元(, 小豪有零用錢(120-y)元).
y+(120-y) = 120
y = 60%(120-y)
y/0.6 = 120-y
y+ y/0.6 = 120
y+ 10y/6 = 120
6y+ 10(6)y/6 = 120*6
6y+10y = 720
16y = 720
y = 720/16
y = 45
所以子晴有零用錢45元.
y+(120-y) = 120
y = 60%(120-y)
y/0.6 = 120-y
y+ y/0.6 = 120
y+ 10y/6 = 120
6y+ 10(6)y/6 = 120*6
6y+10y = 720
16y = 720
y = 720/16
y = 45
所以子晴有零用錢45元.
2010-05-27 6:44 pm
小豪和子晴共有零用錢120元
子晴的零用錢是子豪的60%
子晴有零用錢多少元
設子晴有零用錢Y元,子豪有零用錢120-y
120-y=yX60%
0-y=yx(120/60%)
y=$200
子晴的零用錢是子豪的60%
子晴有零用錢多少元
設子晴有零用錢Y元,子豪有零用錢120-y
120-y=yX60%
0-y=yx(120/60%)
y=$200
2010-05-27 2:28 am
小豪和子晴共有零用錢120元
子晴的零用錢是子豪的60%
子晴有零用錢多少元
A. 設子晴有零用錢y元(, 小豪有零用錢(120-y)元).
y+(120-y) = 120
y = 60%(120-y)
y/0.6 = 120-y
y+ y/0.6 = 120
y+ 10y/6 = 120
6y+ 10(6)y/6 = 120*6
6y+10y = 720
16y = 720
y = 720/16
y = 45
所以子晴有零用錢45元.
子晴的零用錢是子豪的60%
子晴有零用錢多少元
A. 設子晴有零用錢y元(, 小豪有零用錢(120-y)元).
y+(120-y) = 120
y = 60%(120-y)
y/0.6 = 120-y
y+ y/0.6 = 120
y+ 10y/6 = 120
6y+ 10(6)y/6 = 120*6
6y+10y = 720
16y = 720
y = 720/16
y = 45
所以子晴有零用錢45元.
參考: Myself
收錄日期: 2021-04-13 17:16:17
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100526000051KK01004