不知是我英文不好還是甚麼﹐唔係好明....題目如下﹕
How many yards of material from a 24-yard length of cloth remain after 3 pieces, each 3 1/2 yards long, and 5 pieces, each 2 1/4 yards long, are removed?
點解答案會係 2 1/4 ﹖ 可否詳細解釋。
十萬個唔該晒﹗﹗﹗
數學應用題 operation with fractions
2007-10-11 3:38 pm
回答 (1)
2007-10-11 3:51 pm
✔ 最佳答案
the question is:24 碼長度的布料剩餘
3 塊，每塊 3 1/2 碼布
和 5 塊，每塊 2 1/4 碼布
問剪下多少?
= 24 - (3 X 3 1/2) - (5 X 2 1/4)
= 24 - 10 1/2 - 11 1/4
= 2 1/4
收錄日期: 2021-04-29 20:02:34
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071011000051KK00487