Proportions and Unit Rates

There are 1600 calories in the 5 cups of dog food Mike gives his adult dog. Mike gives his puppy 3 cups of the same dog food. How many calories are in the 3 cup serving?

• 800 calories

• 960 calories

• 640 calories

• 3200 calories

An eight pack of juice boxes costs $4.79, and a 12 pack of juice boxes cost $6.59. Use this information to calculate the better buy.

• 8 pack

• 12 pack

Which is the better buy? A 12-pack of Pepsi for $3.50 or a 6-pack for $1.80?

• The 12-pack

• The 6-pack

• They're the same

• Neither, I prefer Coke

Which is the "better buy"?  A 12 ounce can of corn for $1.92 of  a 20 ounce can of corn for $3.00?

• They are the same

• The  20 ounce can

• The 12 ounce can

The car travels 440 miles in 8 hours. What is the unit rate?

• 12 miles per hour

• 55 miles per hour

• 110 miles per hour

• 44 miles per hour

You travel 150 miles on 5 gallons. How far did you travel per gallon?

• 15 miles

• 30 miles

• 3 miles

• 25 miles

If Justin ordered 5 ice cream bars for $12.25, how much was each ice cream bar?

• $2.45

• $4.00

• $7.25

• $1.25

In an animal shelter, there are 5 dogs for every 20 cats. Which rate best represents the relationship between dogs and cats?

• 10 dogs for every 40 cats

• 1 dog for every 5 cats

• 2 dogs for every 10 cats

• 12 dogs for every 50 cats

When are unit rates useful? Choose the best answer.

• When you want to subtract a number by another.

• When you want to multiply one number by another.

• When you want to compare prices.

• When you want to figure out the probability of a number.

Hamburger sells for 3 pounds for $6. If Alicia buys 10 pounds of hamburger, how much will she pay?

• $30

• $20

• $60

• $10