設未知數是y,列出方程計算這題。
在哥哥收集的全部郵票中,英國郵票佔32%,美國郵票佔26%,共有145%,哥哥共收集了郵票多少枚?
maths
2007-08-17 12:30 am
回答 (2)
2007-08-17 12:51 am
✔ 最佳答案
I think you mean there are in total 145 British and American stamps.y = 145 / (32%+26%)
= 145 / 58%
= 250
Therefore, he has 250 stamps.
2007-08-17 1:11 am
y(1-32%)+y(1+26%)=145%
收錄日期: 2021-04-18 23:08:14
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070816000051KK03618