Question

Your model car is 7 inches long. it is an exact model of a car that is 10.5 feet long. a window on the car is how many times wider than a window on the model?

Answer 1

You can't know, because you don't know how big it is on the model

Answer 2

18 times wider.

Explanation:

We have been given that a model car is 7 inches long. It is an exact model of a car that is 10.5 feet long. We are asked to find how many times the widow on the car is wider than widow on the model.

To solve our given problem, we need to find scale factor.

First of all, we will convert 10.5 feet to inches.

1 feet = 12 inches

`\text{10.5 feet}=10.5* 12 \text{ inches}`

`\text{10.5 feet}=126 \text{ inches}`

To find scale factor, we will divide length of actual car by length of model car as:

`\text{Scale factor}=\frac{126\text{ inches}}{7\text{ inches}}`

`\text{Scale factor}=18`

Therefore, a window on the car is 18 times wider than a window on the model.