Peter bought a dozen of pens at 45% discount and saved $27.Find the selling
price of each pen.
中一數學問題(百份數)
2008-03-13 1:18 am
回答 (4)
2008-03-13 1:35 am
✔ 最佳答案
Let y be the marked price.45%y=27
y=60
Therefore the marked each pen is$5.
So the selling price is:
=(5*12-27)/12
=33/12
=$2.75
Hope that I can help you!!給最佳我吧!! Thanks a lot!!
參考: me
2008-03-13 1:35 am
Let $y be the selling price of each pen.
12y x (1-45%) = 12y - 27
12y x 0.55 = 12y - 27
6.6y = 12y -27
5.4y=27
y=5
∴The selling price of each pen is $5
12y x (1-45%) = 12y - 27
12y x 0.55 = 12y - 27
6.6y = 12y -27
5.4y=27
y=5
∴The selling price of each pen is $5
參考: myself(:
2008-03-13 1:33 am
let x be the original selling price
x(45%)=27
x=$60
the new selling price
=60(1-45%)
=$33
selling price of each pen
=33/12
=$2.75
x(45%)=27
x=$60
the new selling price
=60(1-45%)
=$33
selling price of each pen
=33/12
=$2.75
2008-03-13 1:32 am
答案冇可能係2.75，係5
因為45%x=27(設x係12支筆的價錢)
因此27/45%=x
x=60元(12支筆)
再計每支的價錢，即60/12=5
所以應該係每支5元
因為45%x=27(設x係12支筆的價錢)
因此27/45%=x
x=60元(12支筆)
再計每支的價錢，即60/12=5
所以應該係每支5元
參考: me
收錄日期: 2021-04-13 15:16:40
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