Mastering Proportions: Word Problems & Cross-Multiplication

A recipe calls for 2 cups of flour for every 3 cups of sugar. If you want to use 6 cups of sugar, how many cups of flour do you need?

• 6 cups of flour

• 4 cups of flour

• 2 cups of flour

• 3 cups of flour

A car travels 150 miles on 5 gallons of gas. How many miles can it travel on 8 gallons of gas?

• 180 miles

• 240 miles

• 200 miles

• 300 miles

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

• 30

• 15

• 20

• 25

A map shows that 1 inch represents 10 miles. If two cities are 3 inches apart on the map, how far apart are they in real life?

• 30 miles

• 25 miles

• 15 miles

• 20 miles

A recipe requires 3 eggs for every 2 cups of milk. If you have 6 cups of milk, how many eggs do you need?

• 6 eggs

• 12 eggs

• 9 eggs

• 3 eggs

A store sells 5 apples for $2. How much would 15 apples cost?

• $4.00

• $10.00

• $8.00

• $6.00

If a car can travel 240 miles on 8 gallons of gas, how many gallons are needed to travel 360 miles?

• 8 gallons

• 15 gallons

• 10 gallons

• 12 gallons

In a school, the ratio of teachers to students is 1:15. If there are 30 teachers, how many students are there?

• 450

• 600

• 300

• 4500

A fruit stand sells oranges at a rate of 4 for $1. How much would 20 oranges cost?

• $2

• $10

• $5

• $3

If a recipe calls for 2 tablespoons of oil for every 5 cups of flour, how much oil is needed for 15 cups of flour?

• 4 tablespoons

• 8 tablespoons

• 10 tablespoons

• 6 tablespoons