Just switch the x and the 3
ladders leaning against the wall form triangles. If two of these triangles share the same angle (except the one between wall and floor), they're similar. (The angle between wall and floor is the same, and the sum of all angles in a triangle is 180 degrees)
Step-by-step explanation:
Let the original cost of tailored suit be $ x.
Thus, original cost of tailored suit is $ 300.