试题与答案

解比例.X:14=6:280.75x=0.25338:13=x:160.5:0.

题型:解答题

题目:

解比例.
X:14=6:28

0.75
x
=
0.25
3
3
8
1
3
=x:
1
6
0.5:0.25=x:6
x
0.08
=
2
0.4
1
3
:x=4:12

答案:

(1)X:14=6:28,

28X=14×6,

28X=84,

x=3;

(2)

0.75
x
=
0.25
3

0.25x=0.75×3,

0.25x=2.25,

x=9;

(3)

3
8
1
3
=x:
1
6

1
3
x=
3
8
×6,

1
3
x=
9
4

x=

27
4

(4)0.5:0.25=x:6,

0.25x=0.5×6,

0.25x=3,

x=12;

(5)

x
0.08
=
2
0.4

0.4x=2×0.08,

0.4x=0.16,

x=0.4;

(6)

1
3
:x=4:12,

4x=

1
3
×12,

4x=4,

x=1.

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