Mastering Ratios: Comparing Rates and Proportionality

A recipe calls for 2 cups of flour for every 3 cups of sugar. What is the ratio of flour to sugar?

• 1:2

• 3:2

• 2:3

• 4:3

If a car travels 150 miles using 5 gallons of gas, what is the unit rate of miles per gallon?

• 30 miles per gallon

• 35 miles per gallon

• 25 miles per gallon

• 40 miles per gallon

In a class, the ratio of boys to girls is 4:5. If there are 20 boys, how many girls are there?

• 25

• 20

• 15

• 30

A fruit stand sells apples and oranges in the ratio of 3:2. If there are 30 apples, how many oranges are there?

• 15

• 20

• 25

• 10

If a recipe requires 4 eggs for every 2 cups of milk, what is the unit rate of eggs to cups of milk?

• 4 eggs per cup of milk

• 1 egg per cup of milk

• 2 eggs per 4 cups of milk

• 2 eggs per cup of milk

A map shows a scale of 1 inch to 10 miles. If two cities are 3 inches apart on the map, how far apart are they in miles?

• 30 miles

• 25 miles

• 15 miles

• 40 miles

In a school, the ratio of students to teachers is 15:1. If there are 120 students, how many teachers are there?

• 8

• 6

• 12

• 10

A car can travel 240 miles on 8 gallons of gas. What is the unit rate of miles per gallon?

• 25 miles per gallon

• 40 miles per gallon

• 30 miles per gallon

• 20 miles per gallon

If a store sells pencils in packs of 6 and erasers in packs of 4, what is the ratio of pencils to erasers if you buy 3 packs of each?

• 3:2

• 1:1

• 4:3

• 2:3

A recipe uses 5 cups of flour for every 2 cups of sugar. If you want to make a half batch, how many cups of sugar do you need?

• 2 cups of sugar

• 1 cup of sugar

• 3 cups of sugar

• 4 cups of sugar