90
The product is: 96
It is 21/1 or 21:1
21% = 21/100
21/7 = 3 Or, a 3 to 1 ratio.
13:21
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