Question

Which ratio forms a proportion with 15/ 21?

Answer 1

\[\frac{ 20 }{ 26 }\]
\[\frac{ 7 }{ 5 }\]
\[\frac{ 20 }{ 28 }\]
\[\frac{ 12 }{ 18 }\]

Answer 2

15/3=5
21/3=7 So is?

Answer 3

7/5?

Answer 4

I don't know why is it 7/5 it's 5/7

Answer 5

That's why I'm confused

Answer 6

Unless it's 20/28 because 20 is a multiple of 5 and 28 is a multiple of 7

Answer 7

20/4=5
28/4=7 :)

Answer 8

yeah it's 20/28

Answer 9

Okay, makes sense now. Thank you so much!

Answer 10

welcome :)