Question

A model is made of a car. The car is 7 feet long, and the model is 16 inches long. What is the ratio of the length of the car to the length of the model?

4:21
7:16
16:7
21:4

Answer 1

So you have to convert feet into inches= 7 x 12= 84 inches

so the length of the car is 84 inches

now length of model is 16 inches, therefore the ratio of the length of the car to the model is

`(84)/(16) = (21)/(4)`

ans: 21/4

Answer 2

21:4

Explanation:

You must use the same units. Let's convert the length of the car to inches since the length of the model is given in inches.

7 ft * (12 inches)/(1 ft) = 84 inches

ratio of length of car to length of model = 84/16 = 21/4 = 21:4