Question: A bag is sold at $320 with a 36% discount, and the loss is 20percent.
a. Find the cost of the school bag
b. If the school bag is sold at the marked price, find the profit percentage.
朋友理解 320as selling price after 36percent discount
佢老公話 320 with a 36 percent discount 係一舊
所以320係 marked price 未折前
佢地個女話老師教 見 sold at 當 selling price
求問你地會點理解
$320 係已經 64折左
因為b 係問原價係幾錢
正價: $500
320係折左，同時呢個錢係loss20%
所以320/（1-36%）係marked price
320/(1-20%)係cost
謝謝各位回覆
即佢老公係錯的了
Hahaha
佢哋個女啱
我理解係
(Selling Price - Cost)/Selling Price = Gross Profit
(320 - cost) / 320 = - 0.2
Cost = 384
Original Price = 320 / (1-0.36) = 500
Sell at $500 -> GP = (500-384)/500 = 23.2%
講gain定loss係同cost比較架，分母係cost
似朋友理解啱
我估
a)Cost = 320/(1-20%) = 400
b)Marked price 即係定價 = 320/(1-36%) = 500
所以profit margin = （500-400)/500 = 20%
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