Get expert insights and community support for your questions on IDNLearn.com. Our community provides timely and precise responses to help you understand and solve any issue you face.

Which pair of ratios form a proportion?

A.
5 : 11 and 6 : 12

B.
7 : 13 and 21 : 39

C.
8 : 14 and 24 : 30

D.
10 : 20 and 20 : 30

Please help me.