Question

A : B = 5 : 7 and B : C = 3 : 5 what is the ratio of A : B : C ?​

Answer 1

15:21:35 (I'm not sure, but this is my best guess)

Explanation:

15:21 = A:B (plugging in 3 as a test)

21:35 = B:C

15:21:35 = A:B:C (can't simplify)