Ratios, Rates, and Proportions

Select ALL the ratios that are equivalent to 16 : 6

• 3 to 8

• 32 : 12

• 4 to 2

• 8 to 3

For a single batch of cookies, a recipe calls for 2 eggs and 3 cups of flour. How much flour and how many eggs are needed to make 3 batches?

• 6 eggs and 9 cups of flour

• 6 cups of flour and 9 eggs

• 8 eggs and 12 cups of flour

• 12 eggs and 8 cups of flour

Write the ratio 75:20 in simplest form.

Which two choices show the ratio 12:39 in 2 different ways?

• 12 to 39

Are the ratios 7:21 and 21:63 equivalent?

• yes

• no

What is the unit rate for 282 passengers in 47 cars?

• 8 passengers per car

• 6 passengers per car

What is the unit rate for 600 calories in 8 servings?

• 75 calories per serving

• 12 calories per serving

Which is the better buy... a 10-oz box of cereal that costs $2.79, or a 13-oz box of the same cereal that costs $3.99?

Hint- find the unit rates of both and compare

• the 10 oz size is the better buy

• the 13 oz size is the better buy