We are given two similar quadrilaterals ABCD and WXYZ
Recall that if two quadrilaterals are similar then corresponding sides are in the same proportion.
So we can write,
[tex]\frac{AD}{WZ}=\frac{DC}{ZY}[/tex]
Let us substitute the given values and solve for ZY
[tex]\begin{gathered} \frac{12}{50}=\frac{3}{ZY} \\ ZY\cdot12=50\cdot3 \\ ZY=\frac{50\cdot3}{12} \\ ZY=\frac{150}{12} \\ ZY=12.5 \end{gathered}[/tex]
Therefore, the length of side ZY is 12.5
The correct option is C.
