Chloe is driving on the freeway. She is

200 miles from Los Angeles. She drives

at a constant speed of 55 miles per hour.

Discuss the gist with your group.

​

Let's make sense of the problem.

​What does the unit rate 55 tell you in

this situation? Discuss with your group.

​What does the unit rate 55 tell you in

this situation? Discuss with your group.

​On another trip, Chloe drives at a constant

speed of 60 miles per hour. What is Chloe’s

unit rate? What does the unit rate tell you?

©Curriculum Associates, LLC Copying is permitted.

Make connections and explain your thinking

Look Ahead Chloe’s constant speed of 55 miles
per hour is a rate. The numerical part of the
rate, 55, is called the unit rate.

c. The table shows that Chloe

travels 240 miles in 4 hours.
Complete the equivalent ratios
in the first two columns. Where
do you see Chloe’s unit rate?

d. The third column of the table

shows the quotient of the
numbers in each equivalent
ratio. Complete the third
column. What do you notice?

Miles,

a

Hours,

b

1

2

180

240

4

​Chloe’s constant speed of 55 milesper hour is a rate. The numerical part of the rate, 55, is called the unit rate.

The table shows that Chloe travels 240 miles in 4 hours. Complete the equivalent ratios in the first two columns. Where do you see Chloe’s unit rate?