An electric cooker marked $576 is sold at a discount of 25% .
1.Find the selling price.
2.If the discount is the same as 45% of the cost price , find the cost price .
3.Find the profit per cent.
I hope you can help me.
Thank you!
maths F.1
2007-02-19 12:38 am
回答 (3)
2007-02-19 12:58 am
✔ 最佳答案
1. The selling price=$576x(1-25%)
=$576x75%
=$432
2.Let y be the cost price
576x25%=yx45%
144=yx45%
144x100/45=y
y=320
The cost price is $320.
3. (432-320)/320x100%
=112/320x100%
=35%
參考: maths book
2007-02-19 2:06 am
1.The selling price=576x(1-25%)
=576x75%
=$432
2.The cost price=576/(1-45%)
=576/55%
=$1047.27
3.The profit per cent=[(1047.27-576)/1047.27]x100%
=45%
=576x75%
=$432
2.The cost price=576/(1-45%)
=576/55%
=$1047.27
3.The profit per cent=[(1047.27-576)/1047.27]x100%
=45%
參考: me
收錄日期: 2021-04-11 17:07:47
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