Question

A scale drawing of an office building is not labeled, but indicates 1/5=5 inches feet. On the drawing, one wall measures 4 inches. How long is the actual wall?

Answer 1

Given

The scale drawing measurement is given

$\frac{1}{5}in=5feet$Explanation

To determine the actual length of wall ,when the wall measures 4 inches.

Apply the conversion method.

$\begin{gathered} \frac{1}{5}in=5feet \\ 1in=\frac{5}{\frac{1}{5}}feet \\ 1in=25feet \end{gathered}$

Then the actual length of wall is measured as

$4in=4\times25=100feet$Answer

Hence the actual length of wall is 100 feet.