影碟每隻虧本24元,賠率15%,求每隻影碟的成本。
(橫式、部驟、答案)
2006-11-29 14:42:14 · 5 個解答 · 發問者 wingb 3 in 科學 ➔ 數學
24/15%
=24x 100/15
=8x20
=160(元)
2006-11-29 14:47:20 · answer #1 · answered by 不明 3 · 0⤊ 0⤋
$24/15%
=$160
2006-11-30 10:59:30 · answer #2 · answered by lam 3 · 0⤊ 0⤋
設x=
x-24 = x(1-15%)
x-24 = 0.85x
x-0.85x = 24
0.15x = 24
x = 73.333333......
x~ 73
每隻影碟的成本73元
2006-11-29 20:23:42 補充：
對不起！弄錯了！應該是：設x= 每隻影碟的售價x-24 = x(1-15%)x-24 = 0.85xx-0.85x = 240.15x = 24 x = 24/0.15 x = 160元每隻影碟的售價 (160元) 扣除 24元虧損等於成本 136 元
2006-11-29 14:51:25 · answer #3 · answered by Ming 7 · 0⤊ 0⤋
售價 - 成本 = 虧本
虧本/售價 = 15% = 24元
售價= 24/0.15
= 160
成本 = 160-24 = 136元
2006-11-29 14:51:18 · answer #4 · answered by cheng 7 · 0⤊ 0⤋
24/15%
=24x 0.15
=160(元)
2006-11-29 14:49:51 · answer #5 · answered by 亞橙 1 · 0⤊ 0⤋