Answer:
n = 18
Step-by-step explanation:
Corresponding parts of similar triangles are in same ratio
[tex]\frac{FG}{XY}=\frac{HG}{YZ}\\\\\frac{n}{6}=\frac{15}{5}\\\\n=\frac{15}{5}*6\\\\n=3*6\\\\n=18[/tex]
