From 1 Math

👨🏻‍🏫 學術台數學

詠瑜

2008-12-02 3:04 am

A computer game is marked at $320, and it is sold at a discount of 30%.
a)Find the selling price.
b)If the discount is 48% of the cost price, find the prafit per cent.

更新1:

please fast !!!!!!Help

更新2:

The answer of the book is 12%

更新3:

WHY?????

回答 (3)

Chau

2008-12-02 3:11 am

✔ 最佳答案

a)selling price=320*(1-30%)=$224

b)(320*70%)*48%=cost price
cost price=$107.52
profit per cent=(224-107.52)/224*100%=52%

👍 0 👎 0

[匿名]

2008-12-03 3:33 am

a) Selling price

$320 x 70% = $224

b) Profit per cent

$320 x 30% = 48% (Cost price)

Cost price = ($320 x 30%) / 48% = $200

Profit per cent = (($224 - $200) / 200) x 100% = 12%

👍 0 👎 0

martin

2008-12-03 3:23 am

a)selling price=320*(1-30%)=$224

b)(320*70%)*48%=cost price
cost price=$107.52
profit per cent=(224-107.52)/224*100%=52%

👍 0 👎 0

收錄日期: 2021-04-19 12:55:47
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081201000051KK01263

檢視 Wayback Machine 備份