contestada

Which one of the following statements expresses a true proportion?
A. 3 : 5 = 12 : 20
B. 42 : 7 = 6 : 2
C. 2 : 3 = 3 : 2
D. 14 : 6 = 28 : 18

Respuesta :

a. 3 : 5 = 12 : 20 
because you are multiplying the 3 and 5 by 4 to get the 12 and the 20.