Please help me to do it....
1)A watch which costs$1000 is sold at a profit of 60%.
By increase the marked price,the watch will sold at s 20%discount in order to keep the profit at 60%.What is the percentage increase of the marked price?
f1 maths,,,,,
2007-01-20 7:00 pm
回答 (2)
2007-01-20 7:14 pm
✔ 最佳答案
樓上的朋友答案錯了, 答案應是:原先的marked price應是
$1000*(1+60%) = $1600
the watch will sold at s 20%discount in order to keep the profit at 60%:
Let X is the increased marked price:
X * (1-20%) = 1600
X*80% = 1600
X = 1600 / 80%
X = $2000
the percentage increase of the marked price:
=(2000-1600)/1600 * 100
=25%
2007-01-20 7:20 pm
Let $x be the origional price is:
1000=x(1+60%)
100000/160=x
x=$625,,
Let $y be the increase
(1000+y)(1-20%)=x(1+60%)
(1000+y)=625(1+60%)/(1-20%)
1000+y=1250
y=$250,,
The percentage increase is:
250/1000*100%
=75%,,
1000=x(1+60%)
100000/160=x
x=$625,,
Let $y be the increase
(1000+y)(1-20%)=x(1+60%)
(1000+y)=625(1+60%)/(1-20%)
1000+y=1250
y=$250,,
The percentage increase is:
250/1000*100%
=75%,,
收錄日期: 2021-04-12 20:23:07
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070120000051KK01042