SAT Lines, angles, and triangles Question

According to a US law, ramps for use by the general public must form an angle with level ground such that $\tan \theta \le \frac{1}{12}$ . If the ramp in the figure conforms to this law and has a height of 20.9 inches, what is the least possible value of x, in inches? The edge length, in inches, of cube Y is $\frac{3}{88}$ the edge length, in inches, of cube X. The surface area, in square inches, of cube Y is n times the surface area, in square inches, of cube X. What is the value of n?