如果有一樣物品原價$3.9,最近$10蚊3件,咁係咪$20蚊6件,$30蚊9件咁計落去?
如果唔係咁可唔可以話比我聽其實係點計?
收錄日期: 2021-04-18 20:35:03
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061221000051KK02140