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 1/2 inches long. how long is the actual car?

1.       So, Sam is building a model of an antiques car that has a scale to the actual car which is 1:10.
The model that he is creating is 18 and ½ inches long.
We need to find the length of an actual car.
=> the scale is 1:10, in this scale, every inch represent 10 inches in of an actual car
=> 18  and ½  will be converted into fraction which will be equals to 18.5
Now, let’s multiply the two numbers
=> 10 x 18.5
=> 185 inches, the length of an actual car is 185 inches long.

21/2 or 5/2