Question

A builder finds some unlabeled dimensions on a blueprint, and no scale is shown. A 15-foot wall that has already been built measures 3 inches on the drawing. A new wall that has to be built measures 5 inches on the drawing. How high will the new wall be?

Answer 1

25

Explanation:

Answer 2

The already built wall is 15 feet tall to 3 inches on the drawing:
15 feet / 3 inches = 5 feet per inch.

For every 1 inch on the drawing the real wall is 5 feet high.

5 feet per inch x 5 inches = 25 feet high