Question

On a blueprint, the height of a door is 3.5 inches. The actual height of the door is 7 feet. What is the scale on the blueprint?

A. 1:24
B. 1:28
C. 1:30
D. 1:32

Answer 1

The scale on the blueprint is 1:2.

Step-by-step explanation:

To find the scale on the blueprint, we can set up a proportion using the given information. The height of the door on the blueprint is 3.5 inches, while the actual height of the door is 7 feet. We can set up the proportion as follows:

Blueprint Height / Actual Height = Scale on Blueprint / 1

Plugging in the values we know:

3.5 inches / 7 feet = Scale on Blueprint / 1

Cross-multiplying we get:

3.5 * 1 = 7 * Scale on Blueprint

Solving for the scale on the blueprint:

Scale on Blueprint = (3.5 * 1) / 7 = 0.5

The scale on the blueprint is 1:2.