Peter bought an article at $x and set the marked price at a profit of 20%. By
offering a discount, he only got a profit of 8%.
-selling price:108%x
-marked price:120%x
-find the dis count percentage.
收錄日期: 2021-04-13 17:23:46
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100722000051KK00239