一條數學的問題
回答 (5)
2007-10-06 8:20 pm
✔ 最佳答案
媽媽身高 = 1.52米爸爸身高 = 1.52 + 0.23 = 1.75米
哥哥身高 = 1.75 － 0.31 = 1.44米
媽媽身高是哥哥身高 的 1.52÷1.44 = 1.05 倍 (取至3個有效數字)
∴答案是1.05 倍
2007-10-06 12:22:07 補充：
應該係1.06倍 先對,因為要四捨五入∴答案是1.06 倍
2007-10-06 15:07:58 補充：
記得唔洗 (1.52 - 1.44) / 1.44 x 100% o架!因為佢唔係問percentage change!!
參考: myself
2007-10-06 9:37 pm
Mum = 1.52
Dad = 1.52 + 0.32
= 1.75
Brother = 1.75 - 0.31
= 1.44
so, (1.52 - 1.44) / 1.44 x 100%
= 0.056
Dad = 1.52 + 0.32
= 1.75
Brother = 1.75 - 0.31
= 1.44
so, (1.52 - 1.44) / 1.44 x 100%
= 0.056
參考: 請於適當位置填上單位!!~~
2007-10-06 8:34 pm
媽媽的身高是哥哥的
1.52/(1.52+0.23-0.31)
=1.52/(1.75-0.31)
=1.52/1.44
=152/144
=1 1/18(倍)
1.52/(1.52+0.23-0.31)
=1.52/(1.75-0.31)
=1.52/1.44
=152/144
=1 1/18(倍)
參考: me
2007-10-06 8:12 pm
媽媽=1.52米
爸爸=1.52+0.23=1.75米
哥哥=1.75-0.31=1.44米
媽的身高是哥哥的多少倍=1-(1.44/1.52)=0.0526倍
爸爸=1.52+0.23=1.75米
哥哥=1.75-0.31=1.44米
媽的身高是哥哥的多少倍=1-(1.44/1.52)=0.0526倍
2007-10-06 8:09 pm
mother's heigh is 1.52M ,
father's heigh is 1.52+0.23=1.75M
brother's heigh is 1.75-0.31M = 1.44M
answer: 1.52M/1.44M = 1.06
father's heigh is 1.52+0.23=1.75M
brother's heigh is 1.75-0.31M = 1.44M
answer: 1.52M/1.44M = 1.06
收錄日期: 2021-05-01 18:17:24
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071006000051KK01572