Question

A model rocket is 3 inches long. The real rocket is 120 feet long. What is the unit rate that describes the relationship of the real rocket to the model rocket?
360 ​ ft/in. ​
40 in./ft
40 ft/in.
360 ​ in./ft ​

Answer 1

Answer:  The correct option is 3, i.e.,40 ft/in.

Explanation:

It is given that the a model rocket is 3 inches long. The real rocket is 120 feet long.

The unit rate which describe the relationship of the real rocket to the model rocket is defined as,

$\frac{\text{Length of real rocket}}{\text{Length of model rocket}}= \frac{120 ft}{3 in.}$

$\frac{\text{Length of real rocket}}{\text{Length of model rocket}}=40ft/in.$

This unit rate is shown in option 3, therefore the correct option is 3.

Answer 2

120/3 =40

 40 ft = 1 inch

so 40 ft/in is correct answer