A model replica of a corvette is 7.5 inches long and 2 inches in height. A real corvette is approximately 15 feet long. What is the height of the real corvette?

Answer 1

We will assume the ratio of model dimensions to the real dimensions is constant so:

replica length replica height

------------------ = -------------------

real length real height

7.5" 2"

----- = -----

15' real height

we want to get everything into the same units for the computation

15' = 180"

7.5" 2"

----- = -----

180" real height

we can cross-multiply to solve for real height:

7.5 * real height = 2 * 180

real height = 48 "

converting to feet, real height = 4 feet

Answer 2

Hi Mercy,

This is a ratio problem.

Put the height of both the model and the car itself as the numerators and the lengths as the denominators.

You get X/2=15/7.5

Cross multiply. to get 7.5X=30

Divide both sides by 7.5 to get X=4.

The corvette is 4 feet tall.

Hope this helps.

michael.russell.10