13:21
The ratio of 21 to 13 can be expressed as 21:13. This means for every 21 units of one quantity, there are 13 units of another. To simplify, you can also express it as a fraction, which would be 21/13. This fraction indicates that 21 is approximately 1.615 times larger than 13.
13/21
13:7
I presume you don't mean 21 minus 13; that is easy enough, and equals 8. If you mean the ratio 13/21, all you do is divide. The answer is 0.1690___.
21/91 = 3/13
13/21
13:7
I presume you don't mean 21 minus 13; that is easy enough, and equals 8. If you mean the ratio 13/21, all you do is divide. The answer is 0.1690___.
21/91 = 3/13
90
It is 21/1 or 21:1
21% = 21/100
21/7 = 3 Or, a 3 to 1 ratio.
The ratio is N:21
As 21 is 3 x 7 the ratio 7:21 = 1:3
The difference of the ratio is three. 21 is three times larger than 7
21/1600 = 0.013125