5:4
Ratios can be written either like this 4/5 or 4:5 both mean 4 out of 5
2/5, 4/10, 6/15, 8/20
no they are not
To compare we have to calculate the ratios in simplest form. The ratios of 6 /8 =3/4.and 8/10 =4/5 . and we can say 4/5 is not equal to 3/4.
No
It could be 8 and 10
yes
Yes
It could be that: 5 to 20 is equivalent 1 to 4
10 over 24 and 15 over 36
12 over 30 = 2 to 5
If you mean: 4 and 20 then the ratio is 1 to 5