(A)a:b=1/2:1/3，b:c=1/4:5/12
(B)a:b=1/2:3/4，b:c=1/4:3/8
更新1:
比
數學題.................
2007-01-30 3:00 am
求 下 列 各 題 a : b : c 。
(A)a:b=1/2:1/3，b:c=1/4:5/12
(B)a:b=1/2:3/4，b:c=1/4:3/8
(A)a:b=1/2:1/3，b:c=1/4:5/12
(B)a:b=1/2:3/4，b:c=1/4:3/8
回答 (5)
2007-01-30 3:16 am
a : b : c = 9 : 6 : 10
a : b : c = 4 : 6 : 9
a : b : c = 4 : 6 : 9
2007-01-30 3:11 am
(A)a:b=1/2:1/3，b:c=1/4:5/12
a:b
b:c
1/2:1/3
1/4:5/12
a:b:c
=3/4 : 7/12 : 3/4
(B)a:b=1/2:3/4，b:c=1/4:3/8
a:b
b:c
1/2:3/4
1/4:3/8
a:b:c
=3/4 : 1 : 1(1/8)
a:b
b:c
1/2:1/3
1/4:5/12
a:b:c
=3/4 : 7/12 : 3/4
(B)a:b=1/2:3/4，b:c=1/4:3/8
a:b
b:c
1/2:3/4
1/4:3/8
a:b:c
=3/4 : 1 : 1(1/8)
2007-01-30 3:07 am
(A) 1/2:1/3
1/4:5/12
= 1/8:1/12 <-----x1/4
1/12:5/48 <-----x1/3
a:b:c=1/8:1/12:5/48
(B) 1/2:3/4
1/4:3/8
= 1/2:3/4
3/4:9/8 <-------x3
a:b:c=1/2:3/4:9/8
希望幫到你
1/4:5/12
= 1/8:1/12 <-----x1/4
1/12:5/48 <-----x1/3
a:b:c=1/8:1/12:5/48
(B) 1/2:3/4
1/4:3/8
= 1/2:3/4
3/4:9/8 <-------x3
a:b:c=1/2:3/4:9/8
希望幫到你
2007-01-30 3:03 am
A;1/3
B:1/4
B:1/4
收錄日期: 2021-05-02 13:41:49
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070129000051KK02871