Question

scale: 1 inch to 72 inches
scale: 1 inch to 6 feet
20 inches
feet

Explanation:

Step1: Identify the scale factor

The scale is 1 inch to 6 feet.

Step2: Set up the proportion

Let $x$ be the actual length in feet. The proportion is $\frac{1\text{ inch}}{6\text{ feet}}=\frac{20\text{ inches}}{x\text{ feet}}$.

Step3: Cross - multiply and solve

$1\times x = 6\times20$. So $x = 120$.

Answer:

120