A Plan for a skateboard ramp shows that the plywood for the triangular sides of the ramp should be cut such that for every 9 inches of height, the triangle should have a base that is 33 inches long. What is the height of the skateboard ramp shown :

The correct answer is: 30 in.

It is given that
For every 9 inches of height, height of the triangle = 33 in.
 For every 33 inches of base, height of the triangle = 9 in.
 For every 1 inch of base, height of the triangle =  in.
In the figure, base = 110 in.
Þ Height of the triangle =  110
= 30 in.