Triangle $ABC$ is similar to triangle $DEF$.  

1. Find the scale factor from triangle $ABC$ to triangle $DEF$.

   Hint (a):

   Find the scale factor by using two corresponding sides.

   Answer (a):

   The scale factor is $5$.

2. Find $x$.

   Hint (b):

   Divide by the scale factor.

   $x=\frac{38.5}{5}$

3. Find $y$.

   Hint (c):

   Multiply the corresponding side by the scale factor.