Which ratios form a proportion?

(A) 3/15, 12/55
(B) 8/24, 12/35
(C) 5/18, 25/90
(D) 4/11, 16/25

my answers;
C
A
B
C
B
( the other 2 you can work on your own your smart . :)

1 answer

this is 100% correct for the practice not the actual quick check!!!