有關中一百分比問題請教

2014-11-30 10:03 pm
A computer game is marked at $320, and it is sold at a discount of 30%.

(a)Find the selling price.
(2700+300) + (2700+300)x20%
= 3000 + 3000 x 20%
= 3000 + 600
= $3600

以上算式以及答案有否錯誤?

(b)If the discount is 48% of the cost price, find the profit per cent.

可否解答B部分?

謝謝各位大大~~~ 明天要交功課了!!!
更新1:

看錯左~~ A computer game is marked at $320, and it is sold at a discount of 30%. (a)Find the selling price. 320 x ( 1-30%) = 320 x 70% = $224 So the selling price is $224 以上算式以及答案有否錯誤? (b)If the discount is 48% of the cost price, find the profit per cent. 可否解答B部分? 謝謝各位大大~~~ 明天要交功課了!!

更新2:

B答案係12% b profit per cent = 12%

回答 (3)

2014-12-01 1:42 am
✔ 最佳答案
Answer of part(b):

(224-320×30%÷40%) / 224 ×100%

=(224-200) / 224 ×100%
´´´´ 5
=10━%
´´´´ 7


不肯定系岩定錯,不過我系咁計的
希望幫到你
參考: 自己
2014-11-30 10:55 pm
your answer in (a) must be wrong
2014-11-30 10:54 pm
題目都沒有說明清楚, 什麼是 2700?


收錄日期: 2021-04-18 14:30:57
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