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An engineer makes a model of a bridge using a scale of 0.5 cm = 3 feet. The length of the actual bridge is 123 feet. What is the length of the model?

User Dhaya
by
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1 Answer

6 votes

Answer:

20.5 cm

Explanation:

Set up a proportion where x is the length of the model in cm:


(0.5)/(3) =
(x)/(123)

Cross multiply and solve for x:

3x = 61.5

x = 20.5

So, the model's length is 20.5 cm

User Marvin Zumbado
by
9.0k points

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