以$1840出售一隻手錶，可獲利15%。若要把盈利增加1倍，問手錶的售價為多少?
要詳細既步驟...thx
答案係$2080
盈利既問題...唔該幫幫手...thx
2010-01-24 7:50 pm
回答 (2)
2010-01-24 7:56 pm
✔ 最佳答案
以$1840出售一隻手錶，可獲利15% :成本 x (1 + 15%) = 1840
成本 = 1840 / 1.15 = $1600
若要把盈利增加1倍,即要獲利 15% x 2 = 30% :
手錶的售價 = 成本 x (1 + 30%)
= 1600 x (1 + 30%) = $2080
2010-01-25 1:15 am
let x be the original price of watch,
x(1+15%)=1840
x=1600
the benefits = 1840-1600
= 240
if we double the benefits = 240*2 + 1600
= 2080
x(1+15%)=1840
x=1600
the benefits = 1840-1600
= 240
if we double the benefits = 240*2 + 1600
= 2080
參考: myself
收錄日期: 2021-04-21 22:07:17
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https://hk.answers.yahoo.com/question/index?qid=20100124000051KK00462