Given the figure shown below, is ΔABC ~ ΔAXY? If so, what is the scale factor between the two triangles?

Answer:
r = 1.67
Step-by-step explanation:
[tex]\frac{12}{20} = \frac{17}{x} \\ 12x=340\\x=28.3333...\\x=28.33\\25/15= 1.66666...\\20/12=1.666666...\\28.33/17=1.666\\scale factor= 1.67[/tex]
I don't know if this is right or not.