Unit Rates & Unit Rates & PricesPrices A rate is a ratio that compares two quantities measured in different units.

A unit rate is a rate whose denominator is 1. To change a rate to a unit rate, divide both the numerator and denominator by the denominator.

PRICE (total)UNIT

Ex: 1 It costs $91 for 7 hours of dance lessons.

How much does it cost per lesson?

Ex: 2 A 14-piece bucket of chicken costs $8.82.

how much does each piece of chicken cost?

Ex: 3 To make 12 smoothies, Henry needs 30

cups of ice. How many cups of ice does he need for one smoothie?

Ex: 4 Danielle is cycling 68 miles as a

fundraising commitment. She wants to complete her ride in 4 hours. What should be her average speed in miles per hour?

Ex: 5 A 6-pack of Pepsi cost $2.10. A 12-pack of

Dr. Pepper costs $3.96. Which is the better buy?

Ex: 6 Merry Maids will clean 6 rooms for $73.50. Caring Cleaners will clean 8 rooms for

$104.80. Which is the better buy?

Ex: 7 At the Landings Golf Club,100 golf balls

cost $112, and 350 golf balls cost $360.50. Which is the better buy?

Show What You Know1. Ian earned $96 babysitting for 12 hours. How

much did he earn each hour?

2. It takes Mia 49 minutes to complete 14 homework problems. On average, how long did it take to solve each problem?

3. Seth’s family plans to drive 220 miles to their vacation spot. They would like to complete the drive in 4 hours. What should their average speed be in miles per hour?

Insert Lesson Title Here

$8

3.5 minutes

55

Show What You Know

Insert Lesson Title Here

4. Abby can buy a 7-pound bag of dry cat food for $7.40, or she can purchase a 3-pound bag for $5.38. Which size is the best buy?

7 lb bag