幾條簡單form1 maths.

2007-07-16 4:43 am
Find a:b:c

2a=3b=8b=9c

=?




Find a:b:c

find the unknown value in each of the following:
6:y=5:4

回答 (3)

2007-07-16 5:17 am
✔ 最佳答案
( 1 ) 2a = 3b

a / b = 3 / 2

a : b = 3 : 2

8b = 9c

b / c = 9 / 8

b : c = 9 : 8

So a : b : c = 27 : 18 : 16

( 2 ) 6 : y = 5 : 4

6 / y = 5 / 4

5y = 24

y = 24 / 5
參考: My Maths Knowledge
2007-07-16 5:21 am
1)
2a=3b
8b=9c
a : b : c
3 : 2
9 : 8
27 : 18 : 16

2)
6:y = 5:4
5y= 4x6
y= 24/5

2007-07-15 21:24:12 補充:
a : b = 3 : 2b : c = 9 : 8然後倍大番佢得到a : b : c27 :18 : 16
2007-07-16 5:15 am
淨係識答第2部分

6/y=5/4

y=(6*4)/5

y=24/5
參考: ME


收錄日期: 2021-04-13 00:49:57
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070715000051KK04174

檢視 Wayback Machine 備份