问题 解答题
先化简比,再求比值.
3
4
:125%0.6:
3
4
10分:
2
5
时.
答案

(1)

3
4
:125%,

=

3
4
5
4

=(

3
4
×4):(
5
4
×4),

=3:5;

3
4
:125%,

=

3
4
÷
5
4

=

3
4
×
4
5

=

3
5

(2)0.6:

3
4

=

3
5
3
4

=(

3
5
×
20
3
):(
3
4
×
20
3
),

=4:5;

0.6:

3
4

=0.6÷

3
4

=0.6×

4
3

=0.8;

(3)10分:

2
5
时,

=10分:24分,

=10:24,

=(10÷2):(24÷2),

=5:12;

10分:

2
5
时,

=10分:24分,

=10÷24,

=

5
12

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