請幫我解答:
一套電腦軟件標價是$280, 現以八折發售. 如果折扣是成本的35%, 求盈利百分率.
thx..
急~數學題
2007-08-14 3:32 am
回答 (3)
2007-08-14 3:36 am
✔ 最佳答案
(280x0.2)/0,35=160(224-160)/160x100%= 40%
2007-08-14 3:40 am
盈利是40%
假設原價是a
35%a = 280*(1-80%)
35%a = 56
a = 160
即是 :
(280-56)/160
=1.4
即是40%
假設原價是a
35%a = 280*(1-80%)
35%a = 56
a = 160
即是 :
(280-56)/160
=1.4
即是40%
2007-08-14 3:40 am
Original price $280 x 80% = discount price $224
Discount amount = $280-$224 = $56
Cost = $56 / 35% = $160
Profit margin = (Discount price $224 - Cost $160)/Cost $160 = 40%
Discount amount = $280-$224 = $56
Cost = $56 / 35% = $160
Profit margin = (Discount price $224 - Cost $160)/Cost $160 = 40%
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