Chapter 2.8, Problem 12P

Sammy is constructing a model bridge out of sticks. The actual bridge is $1320\text{ft}$ long. He wants the scale of his bridge to be 1:400. How long should the model be?

To determine

To Find: The length of the model

Answer to Problem 12P

Length of the model is $3.3\text{ft}$

Explanation of Solution

Given:

The scale is $1:400$

Height of the actual bridge is $1320\text{feet}$

Calculation:

Let, the length of the model be $x$

So,

  $\begin{array}{l}\frac{1}{400}=\frac{x}{1320}\\ x=\frac{1320}{400}\\ x=3.3\text{ft}\end{array}$

  $3.3\text{ft}$ is the length of the model