1.用3個水龍頭可以在2個半小時內注滿一個水箱.
用5個水龍頭注滿該水箱需時多久?請列式作答.
簡單數學題...
2008-01-21 3:17 am
回答 (1)
2008-01-21 3:45 am
✔ 最佳答案
Time needed for one tap to fill a tank=(2.5×3)h
=7.5h
Hence, the time needed for five tap to fill a tank
=(7.5÷5)h
=1.5h
參考: me
收錄日期: 2021-04-14 19:00:11
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080120000051KK03418