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From 1 Math
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最佳解答:
a)selling price=320*(1-30%)=$224 b)(320*70%)*48%=cost price cost price=$107.52 profit per cent=(224-107.52)/224*100%=52%
其他解答:
a) Selling price $320 x 70% = $224 b) Profit per cent $320 x 30% = 48% (Cost price) Cost price = ($320 x 30%) / 48% = $200 Profit per cent = (($224 - $200) / 200) x 100% = 12%|||||a)selling price=320*(1-30%)=$224 b)(320*70%)*48%=cost price cost price=$107.52 profit per cent=(224-107.52)/224*100%=52%
From 1 Math
發問:
此文章來自奇摩知識+如有不便請留言告知
A computer game is marked at $320, and it is sold at a discount of 30%. a)Find the selling price. b)If the discount is 48% of the cost price, find the prafit per cent. 更新: please fast !!!!!!Help 更新 2: The answer of the book is 12% 更新 3: WHY?????最佳解答:
a)selling price=320*(1-30%)=$224 b)(320*70%)*48%=cost price cost price=$107.52 profit per cent=(224-107.52)/224*100%=52%
其他解答:
a) Selling price $320 x 70% = $224 b) Profit per cent $320 x 30% = 48% (Cost price) Cost price = ($320 x 30%) / 48% = $200 Profit per cent = (($224 - $200) / 200) x 100% = 12%|||||a)selling price=320*(1-30%)=$224 b)(320*70%)*48%=cost price cost price=$107.52 profit per cent=(224-107.52)/224*100%=52%
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