Ratios
Rate
Better Buy/Rate/Unit Rate
Equivalent Ratios
Choice
100
What are three ways to write a ratio?
a:b, a to b, a/b
100

Define unit rate.

A rate with a denominator of 1; An amount per 1 unit. 

100
Adam spent $2.01 on 3 pounds of bananas. Ben spent $3.45 on 5 pounds of apples. Who had the better buy? Show all work!
Adam.
100

A cookie recipe calls for 1 cup of sugar and 1/2 cup of chocolate chips. Create a table with 5 equivalent ratios that shows the relationship between the number of cups of sugar to the number of cups of chocolate chips.

(1,0.5) (2,1) (3,1.5) (4,2) (5,2.5)

100

When comparing rates, what are the two main ways you can compare equivalent rates?

1) Find the unit rate.

2) Find a common value so you can compare.

200

There are 12 cupcakes for every 9 cookies. Write this ratio in SIMPLEST FORM. 

4:3, 4/3, 4 cupcakes to 3 cookies

200

If you can read 380 words in 5 minutes, what is the number of words per minute?

76 words per minute

200
Which is the better buy? 18 pens for $6.84 or 30 pens for $8.40? (Show all work!)
30 pens for $8.40
200
Kristina walks for 4 minutes after every 28 minutes of running. Jenny walks for 3 minutes after every 21 minutes of running. Are their ratios of walking time to running time equivalent? Show your work.
Yes 1/7 = 1/7
200

Are these proportional?

3/5 = 21/35

Yes, they are proportional.

300

The ratio of red Skittles to green Skittles is 3:7. There are 50 Skittles total. How many are red? How many are green?

15 red and 35 green

300
Dennis paid $42.98 for 14 gallons of gas. What is the price per gallon?
$3.07 per gallon
300
Which is the best buy? 6 shirts for $25.50 or 5 shirts for $21.00? Show all work.
5 shirts for $21.
300
Which of the following ratio are not equivalent to the ratio 4:9? 16:36, 20:40, 2:5, 24:54?
20:40 and 2:5
300

You swim your first 4 laps in 2.4 minutes. You complete 16 laps in 12 minutes. Is the number of laps proportional to your time?

No, they are not proportional.

400
The Giants won 8 games, lost 6 games, and tied 4 games. Write a ratio (in simplest form) of wins and ties to total games.
12 to 18 = 2 to 3
400
If 7 pounds of apples cost $13.16, how much will 10 pounds of apples cost?
$18.80
400
Ashley is going to ride her bike to a friend's house that is 96 miles away. She is riding at an average rate of 15 miles per hour. She has 6 hours to get there. Will she make it on time? Show all work and explain why/why not.
No - she will only be able to travel 90 miles in 6 hours.
400
If Joey spent $28 on 5 pounds of candy, how much will 8 pounds of candy cost?
$44.80
400

In 2007, the U.S. population was 302 million people. In 2012, it was 314 million. What was the rate of population change per year?

2.4 million people per year

500
In the following words, "Easton Middle School", what is the ratio of vowels to consonants?
7 to 10
500

Beth can run 3 miles in 15 minutes. How many miles can she run in an hour?

12 miles

500

Ed drives from Jefferson to Holden, a distance of 250 miles. He then drives on to Paxton, which is 50 miles from Holden. If it takes him 5 hours to complete the entire trip, how fast is he traveling if he is traveling at a constant speed?

60 mph

500
Steven works the same amount of hours each day. On Monday, he got paid $89.50 for ten hours. If he works Tuesday and Wednesday, how much money will he make per hour? How much money will he make in total after three days?
$8.95 per hour; $268.50 in total
500

It costs $68 for 16 square feet of flooring. How much does it cost for 12 square feet of flooring?

$51

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