一條數學題(數學高手請進)是方程式
回答 (4)
2007-05-01 2:28 am
✔ 最佳答案
設這盒糖果共有糖ｘ粒（１－2/7）ｘ＝３５
５／７ｘ＝３５
全式乘７，即５ｘ＝２４５
ｘ＝４９
答：這盒糖果共有糖４９粒
參考: 選我做最佳答案啦
2007-04-29 1:21 pm
let k be the total number of candy
5k / 7 = 35
k = 35 * 7 / 5
k = 49
5k / 7 = 35
k = 35 * 7 / 5
k = 49
2007-04-28 6:26 am
49粒
35/7=5
2*7=14
14+35=49
35/7=5
2*7=14
14+35=49
2007-04-28 6:23 am
以 n 為糖果總數
n x 2/7 = n - 35
35 = n x 5/7
n = 49
n x 2/7 = n - 35
35 = n x 5/7
n = 49
收錄日期: 2021-04-12 23:59:09
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070427000051KK04745