Question

The ratio of Kate's stickers is 7:4. Kate has 21 stickers how man sticker does Jenna have?

Answer 1

First of all, you need to divide 21 by 7 to get 3

Then you can times the 3 by 4 to get the number of stickers Jenna has:
3*4 = 12

Hope this helps! :)

Answer 2

7 is to 4 as 21 is to x

Since 21 is (3)(7); (3)(4) = 12

12 stickers