Answer:
The answer is the option C
[tex]x=30[/tex]
Step-by-step explanation:
see the attached figure to better understand the problem
we know that
If two triangles are similar
then
the ratio of their corresponding sides are equal
In this problem
[tex]\frac{x}{45}=\frac{50}{75}[/tex]
solve for x
[tex]x=45*50/75[/tex]
[tex]x=30[/tex]
