6:8 EASY :)
It is: 3 and 8
It is: 8 to 3
It is simply 6:8. You could, if you wanted to, simplify the ratio by dividing both the numbers by their greatest common factor.
3 to 4
8:16
It is: 8 to 6
4 to 3
As a ratio it is the same as 3 to 4
8
2;6
8 and 3