Sorry,this question's marks will only give to Mh,but welcome to nswer rhis question if u want
Qs:從前有三個人,分別係A,B。C。佢地圍著一個直徑有十米嘅大樹跑圈,A用一分鐘圍住棵樹跑左三個圈,B用咗一分鐘圍住棵樹跑左五個圈,C用咗一分鐘圍住棵樹跑左十個圈,請問佢地到底要用幾多分鐘跑圈先至可以相遇?
收錄日期: 2021-04-15 17:15:22
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20141109000051KK00121