點計以下Ｒａｔｅ＆Ｒａｔｉｏ ? 得一題（要ｓｔｅｐ）
A string of 1.8 m long is divided into 3 parts in the ratio １：１／４：５／８. Find
the length of the longest part inｃｍ.
點計 Rate & Ratio ＩＩ (F.2數學)
2009-09-19 1:58 am
回答 (1)
2009-09-19 2:14 am
✔ 最佳答案
The length of the longest part
= (1 * 1.8) / ( 1 + 1/4 + 5/8)
= 0.96m
= 96cm
method 2 :
1 : 1/4 : 5/8 = 8 : 2 : 5
The length of the longest part = 8 * 1.8 / (8 + 2 + 5)
= 0.96m
= 96cm
Note 1 m = 100cm
收錄日期: 2021-04-21 22:02:46
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https://hk.answers.yahoo.com/question/index?qid=20090918000051KK00962