Compare Proportions

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.

A cake recipe calls for 1 cups of milk and 3 cups of flour. Seth made a mistake and used 5 cups of flour. How many cups of milk should he use to keep the proportions correct?

• 5 cups milk

• 1.75 cups milk

• 2 cups flour

• 2.25 cups milk

Tommy has a bag of LEGOS.  There are 6 yellow, 3 red, and 8 blue LEGOS.  What is the ratio in simplest form of red to yellow LEGOS?

• 1/2

• 6/3

• 2/1

• 3/6

Solve the proportion.

• n=6

• n=24

• n=7

• n=8

Sargento cheese slices $2.48 for 10 slices
or
Velveeta Cheese slices $3.18 for 12 slices
Find the unit price for each and choose the better deal.

• Sargento

• Velveeta

Harry mowed eight lawns and earned $96. How much did he earn for each lawn?

• $96

• $12

• $768

• $8

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

Mrs. Nuckels used 3 cups of flour to make 60 cookies.  How many cups of flour did she use to make 90 cookies?

• 6 c.

• 30 c.

• 4 1/2 c.

• 5 c.

Solve the proportion below:

• 3

• 24

• 21

• 12