A.6/24 = …/21 = …/28 b…/27 = 8/36 =…/63 c…/8 = 15/… = 24/32

A. 6/24 = 5,25/21 = 7/28
B. 6/27 = 8/36 = 14/63
C. 6/8 = 15/60 = 24/32