题目内容
解比例:
4%×
:X=
:12
3.2:5=8:X.
4%×
| 3 |
| 8 |
| 3 |
| 4 |
3.2:5=8:X.
(1)4%×
:x=
:12,
x=12×
×4%,
x=0.18,
x×
=
×0.18,
x=0.24;
(2)3.2:5=8:X,
3.2x=5×8,
3.2x÷3.2=40÷3.2,
x=12.5.
| 3 |
| 8 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 8 |
| 3 |
| 4 |
| 3 |
| 4 |
| 4 |
| 3 |
| 4 |
| 3 |
x=0.24;
(2)3.2:5=8:X,
3.2x=5×8,
3.2x÷3.2=40÷3.2,
x=12.5.
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