There are some optional soft drinks available in restaurant, say, the Spaghetti House意粉屋 . However, the listed price of the soft drink is always more expensive that the same product sold in Park's shop百佳. (with graph....supplier and demand curve)
因我剛讀economics,還沒有概念.
希望大家可以幫忙.
Economics
2007-03-16 4:26 am
回答 (1)
2007-03-19 10:42 am
收錄日期: 2021-04-13 14:17:01
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070315000051KK03871