如果○÷2/5=1/2,□÷2/3=9/20,那么○÷□=_.

问题描述:

如果○÷

2
5
=
1
2
,□÷
2
3
=
9
20
,那么○÷□=______.

○=

1
2
×
2
5
=
1
5

□=
9
20
×
2
3
=
3
10

则:○÷□
=
1
5
÷
3
10

=
1
5
×
10
3

=
2
3

故答案为:
2
3