幫禾解e條方程plzzz!!!
a)
y x (1+15%) - (y-14)=26
20..
last month,, a computer wholesaler sold 1200 mothboards at $500 each,,'
this month he has sold 200 pieces more, but the price has dropped by 17%,,Has
the revenue of the wholesaler increased or decreased this month??
what the percentage change???
禾要條式,,,,同點計
有解釋最好啦thz^^
問兩條maths plz,,,係方程and percentage黎的,,急牙!!!!!
2007-04-24 4:57 am
回答 (2)
2007-04-24 5:05 am
✔ 最佳答案
y x (1+15%) - (y-14)=26y(1.15)-y+14=26 計左(1+15%) 同 拆開左(y-14)
0.15y=26-14 1.15y-y姐係0.15y啦''14搬過去''
0.15y=12 唔洗講啦''冇理由唔明''
y=80 唔洗講啦''
2007-04-23 21:10:38 補充：
第二題唔係好明''
2007-04-24 5:58 am
The amount revenue of last month:
=$600000
The amount revenue of this month:
(1200+200)*500*(1-17%)
=$581000
so the revenue decreased.
The%:
(600000-581000)/581000*100%
=3%
=$600000
The amount revenue of this month:
(1200+200)*500*(1-17%)
=$581000
so the revenue decreased.
The%:
(600000-581000)/581000*100%
=3%
收錄日期: 2021-04-12 19:21:41
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070423000051KK04341