It is 9:1.
13:7
They are: 3 and 7
2 dollas
If you mean 21/18 then the equivalent ratio is 7/6
If the question relates to the ratio 21 : 8 compared with 3 : 1 then they are not equal. Dividing both parts of the first ratio by 8 gives 2⅝ : 1. However, 21 : 7 is equivalent to 3 : 1 as division of both parts of the first ratio by 7 gives 3 : 1.
15, 6
90
7:10 = 3.5:5 = 14:20 = 21:30
Multiply both numbers by the same number (not by zero), and you get an equivalent ratio.
14 to 16, 28 to 32, and 21 to 24
The ratio of 21 to 12 can be expressed as 21:12. To simplify this ratio, you can divide both numbers by their greatest common divisor, which is 3. This simplifies the ratio to 7:4. Therefore, the simplified ratio of 21 to 12 is 7:4.
The equivalent ratio is: 22 to 6