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Maureen is making a 3/10 scale drawing of a doll house if a line on the drawing represents 15 inches how long should the line be ?

Sagot :

We have the following ratio scale:

[tex]\frac{\text{REAL}}{\text{DRAWING}}=\frac{10}{3}[/tex]

If we move the DRAWING term to the rght hand side, we get

[tex]\text{REAL}=\frac{10}{3}\cdot\text{DRAWING}[/tex]

In our case, the line is 15 inches long, then we have

[tex]\text{REAL}=\frac{10}{3}\cdot(15\text{inches)}[/tex]

which gives

[tex]\begin{gathered} \text{REAL}=\frac{10\times15}{3}\text{ inches} \\ \text{REAL}=10\times5\text{ inches} \\ \text{REAL}=50\text{ inches} \end{gathered}[/tex]

Therefore, the answer is 50 inches.

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