Answer:
37.5
Step-by-step explanation:
First you have to realize that these are similar triangles.
You can do a easy cross multiplication with these types of questions by forming an equation with the similar angles.
put the smaller above the decimal and the bigger one below like this.
[tex]\frac{8}{25}[/tex]=[tex]\frac{12}{x}[/tex]
Now cross multiply
8x=300
x=37.5