Question

1. an architect is reading a plan that is drawn on a scale of 0.75 inches to 1 foot. if the plan says that a room is 12 feet high, how high is the roof in the drawing? 9 inches 7 inches 6 inches 16 inches

Explanation:

Step1: Set up proportion

Let $x$ be the height of the room in the drawing. The proportion is $\frac{0.75\text{ inches}}{1\text{ foot}}=\frac{x}{12\text{ feet}}$.

Step2: Cross - multiply

$1\times x = 0.75\times12$.

Step3: Calculate result

$x = 9$ inches.

Answer:

9 inches