Q: The ratio of 21

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21% = 21/100

13:21

The ratio is N:21

21 : 6factor out a 33(7 : 2)7 : 2==========simplified ratio

It is already in its simplest ratio because 17 is a prime number but if it were 7 boys to 21 girls then the ratio would be 1 to 3

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90

21% = 21/100

21/7 = 3 Or, a 3 to 1 ratio.

13:21

ratio of 21 to 15

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

The ratio of girls to boys is 21/14 = 3/2 = 1.5 . The ratio of boys to girls is 14/21 = 2/3 = 0.66 .

21 : 6factor out a 33(7 : 2)7 : 2==========simplified ratio

1:21 or 1/21