Mastering Proportions: Cross-Multiplication Challenges

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?

• 4 cups of flour

• 2 cups of flour

• 5 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?

• 300 miles

• 200 miles

• 240 miles

• 180 miles

If 4 apples cost $2, how much would 10 apples cost?

• $3.00

• $5.00

• $6.00

• $4.00

A map shows that 1 inch represents 20 miles. If two cities are 3 inches apart on the map, how far apart are they in real life?

• 40 miles

• 80 miles

• 100 miles

• 60 miles

In a class, the ratio of boys to girls is 3:5. If there are 15 boys, how many girls are there?

• 30

• 20

• 15

• 25

A recipe requires 3 tablespoons of oil for every 4 servings. How much oil is needed for 10 servings?

• 10 tablespoons

• 2 tablespoons

• 5 tablespoons

• 7.5 tablespoons

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

• 12 gallons

• 8 gallons

• 15 gallons

• 10 gallons

A store sells 5 notebooks for $10. How much would 12 notebooks cost?

• $15

• $30

• $18

• $24

If 6 oranges weigh 2 pounds, how much would 15 oranges weigh?

• 10 pounds

• 8 pounds

• 5 pounds

• 3 pounds

A painter can paint 3 rooms in 2 days. How many rooms can he paint in 5 days?

• 7

• 8

• 10

• 5