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A blueprint shows a layout of a building. Every 5 inches in the blueprint represents 7 feet of the actual building. one of the walls on the blueprint measures 42 inches in length. what is the length of the actual wall

A blueprint shows a layout of a building Every 5 inches in the blueprint represents 7 feet of the actual building one of the walls

Answer :

In this problem the ratio is 5 inches represent 7 feet, so if in the blueprint the wall is 42 inches the we can use a rule of 3 so:

[tex]\begin{gathered} 5\to7 \\ 42\to x \end{gathered}[/tex]

and the equation is:

[tex]\begin{gathered} x=\frac{42\cdot7}{5} \\ x=58.8 \end{gathered}[/tex]

So the wall is 58.8 feet

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Rewritten by : Barada