數學高手。

2007-01-16 3:03 am
一件商品的標價比成本高40%,並以10%的折扣百分率售出。問盈利百分率是多少?

回答 (7)

2007-01-16 3:09 am
✔ 最佳答案
設該商品成本為$x
標價為=(x+40%)
10% 折扣後=(x+40%)(1-10%)

=1.4x (0.9)
=1.26
盈利百分率=(1.26-1)/1 (100%)
26%

希望幫到你....

2007-01-15 19:10:08 補充:
設該商品成本為$x標價為=(x+40%)10% 折扣後=(x+40%)(1-10%)=1.4x (0.9)=1.26x盈利百分率=(1.26x-x)/x (100%)26%希望幫到你....
2007-01-17 5:54 am
設該商品成本為$x
1.4z* (0.9)
=1.26
0.26* (100%)
=26%,,
參考: me
2007-01-16 3:11 am
成本價為1,
 (1+40%)-10%
=1.4-0.1
=1.3
(1.3-1)100%
=(0.3)100%
=30%
所以盈利百分率是30%
2007-01-16 3:08 am
假設商品的成本是A
標價係:1.4A
折扣後係:1.4A(90%)=1.26A

盈利百分率是:
(1.26A - A)÷Ax100%
=26%
2007-01-16 3:07 am
設成本價為a

a X (1+40%) X (1-10%)←呢個係商品賣出的價錢

經過一輛複雜繁瑣的計算過程後
得知

盈利百分率是12.6%
2007-01-16 3:06 am
=1x1.4x.9-1
=0.26
=26%
2007-01-16 3:05 am
盈利百分率是+30%


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