1. Find the unit rate for typing 145 words in 5 minutes.
Unit Rates
LESSON 7-2
Additional Examples
Find the unit rate for typing 145 words in 5 minutes.
= 29 Divide the first quantity by the second quantity.
words
minutes
145 5
The unit rate is , or 29 words per minute.
29 words
1 minute

2. Divide to find the unit price for each size.
Unit Rates
LESSON 7-2
Additional Examples
The same brand of pretzels comes in two sizes: a 10-ounce bag for $.99, and an 18-ounce bag for $1.49. Which size is a better buy? Round each unit price to the nearest cent.
Divide to find the unit price for each size.
price
size
$.99
10 oz
$.10 per ounce
$1.49
18 oz
$.08 per ounce
price
size
The better buy costs less per ounce. Since $.08 is less than $.10,
the 18-ounce bag is the better buy.

3. Unit Rates
LESSON 7-2
Additional Examples
Apples cost $1.49 for 1 pound. How much do 5 pounds of apples cost?
Write the unit rate as a ratio. Then find an equal ratio.
Multiply each term by 5.
$1.49
1 pound
$7.45
5 pounds =
 5
Five pounds of apples cost $7.45.