A×3/4=B×2/3,A与B的比是_,B与A的比值是_.

问题描述:

3
4
=B×
2
3
,A与B的比是______,B与A的比值是______.

因为A×

3
4
=B×
2
3

则A:B=
2
3
3
4
=8:9;
B:A=
3
4
2
3
=9:8=
9
8

故答案为:8:9;
9
8