Question

Sam is building a model of an antique car. The scale of his model to the actual car is 1:10. His model is

18 1/5 inches long. How long is the actual car?

Answer 1

182

Explanation:

You do 18 1/5 times 10 because the model is 10 times smaller than the actual car

Answer 2

182 inches.

Explanation:

We have been given that Sam is building a model of an antique car. The scale of his model to the actual car is 1:10. His model is 18 1/5 inches long.

`18(1)/(5)=18.2`

To find the actual length of the car, we will use proportions as:

`\frac{18.2}{\text{Actual length}}=(1)/(10)`

Cross multiply:

`\text{Actual length}=18.2* 10`

`\text{Actual length}=182`

Therefore, the actual length of the car is 182 inches.