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簡單數學...急要答案!!!
發問:
急急急要答案!!!thx! 問題： 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 profit per cent. 請幫幫手列公式．．．ｔｋｓ！！！ 更新: ＳＯＲＲＹ！我仲係有Ｄ唔明！ 計好ＤＩＳＣＯＵＮＴ同ＣＯＳＴＰＲＩＣＥ ＮＥＸＴＰＲＯＦＩＴ％條式點ＷＲＩＴＥ？？？？
最佳解答:
(a) Selling price = Marked price * (1 - discount rate) = $320 * (1 - 30%) = $320 * 0.7 = $224 The selling price is $224. (b) Discount = Marked price - Selling price = $320 - $224 = $96 Discount = Cost price * 48% => Cost price = Discount / 48% = $96 / 0.48 = $200 Profit rate = Profit / Cost price * 100% = (Selling price - Cost price) / Cost price * 100% = (224 - 200) / 200 * 100% = 24 / 200 * 100% = 12% The profit percent is 12%.
其他解答:
10.7 10.7|||||a) selling price = 320 * (1 - 0.3 ) = 224 b) discount = 320 * 0.3 = 96 cost * 0.48 = 96 cost = 96 / 0.48 cost = 200 2007-11-27 21:02:34 補充： profit % = (selling price - cost) / selling price * 100%= (320-200)/320 * 100%= 37.5% 2007-11-27 21:04:00 補充： 對唔住, 計錯profit % = (selling price - cost) / selling price * 100%= (224-200)/224 * 100%= 10.71%|||||(a) 320x(1-30%) = $224 (b) Let the cost price be $x x(48%) = 320x30% x = 200$ Profit per cent = (224-200)/224 x100% =10.7% (3 sig. fig.) 2007-11-27 21:00:24 補充： Profit per cent = (224-200)/200 x100% =12%咁樣先岩=]4E350C6F8B48ECA2
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