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38 votes
38 votes
May I please get help with this. I still can’t seem to figure out the answers for each

May I please get help with this. I still can’t seem to figure out the answers for-example-1
User Leonardo Cruz
by
3.1k points

1 Answer

25 votes
25 votes

Solution:

Given:


\begin{gathered} \text{Scale drawing of a house;} \\ 1in\colon9ft \end{gathered}

This means 1 inch on the drawing is equivalent to 9 feet in real life.

Part A:

Let x represent the height of the real house.


\begin{gathered} 1in=9ft \\ 8in=x \\ \text{Hence, cross multiplying,} \\ \\ x*1=8*9 \\ x=72\text{feet} \end{gathered}

Therefore, the height of the real house is 72 feet.

Part B:

Let y represent the length of the house in the scale drawing.


\begin{gathered} 1in=9ft \\ y=27ft \\ \text{Hence, cross multiplying,} \\ \\ 9* y=27*1 \\ 9y=27 \\ \text{Dividing both sides by 9,} \\ y=(27)/(9) \\ y=3 \end{gathered}

Therefore, the length of the house in the scale drawing is 3 inches.

User InuYaksa
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2.7k points