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Erin made a scale model of a 70-foot tower. If the model is 40 inches tall, what scale did she use?

User Bertl
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Answer:

The scale factor is 21. For every inch on the model, there are 21 on the real tower.

Explanation:

The 70-foot tower is 840 inches tall. The model she made is 40 inches tall.

70 * 12 = 840

We can divide 840 by 40 to get the scale factor per inch.

840 / 40 = 21

That means, for every inch on the model, there are 21 inches on the tower.

User Gabriel Southern
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