问题 解答题
解比例
x:1.8=5:14
x
1
2
3
=
0.6
1
4
5
75:x=2.5:120.75:
11
24
=x:
1
10
答案

(1)x:1.8=5:14,

14x=1.8×5,

14x=9,

x=

9
14

(2)
x
1
2
3
=
0.6
1
4
5

1

4
5
x=
3
5
×
5
3

9
5
x=1,

x=

5
9

(3)75:x=2.5:12,

2.5x=75×12,

2.5x=900,

x=360;

(4)0.75:

11
24
=x:
1
10

11
24
x=
3
4
×
1
10

11
24
x=
3
40

x=

9
55

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