select all the pairs of ratio's that form a proportion.

1/6 4/20
7/9 28/36
14/18 21/27
30/80 6/18

this question has to answers help my answer's are B. and C.for this question

2 answers

I agree with your answers
ok thanks i had to repost this question because of stuff being put on the website and the comments are blending in and it driving me crazey.