Proportional Reasoning: 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?

• 180 miles

• 240 miles

• 200 miles

• 300 miles

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

• $3.00

• $4.00

• $5.00

• $6.00

A map shows that 1 inch represents 20 miles. How many miles are represented by 3 inches on the map?

• 40 miles

• 80 miles

• 60 miles

• 100 miles

If a 12-ounce bottle of soda costs $1.50, how much would a 20-ounce bottle cost?

• $2.50

• $3.00

• $1.00

• $2.00

A school has a ratio of 3 teachers for every 20 students. If there are 60 students, how many teachers are there?

• 12

• 6

• 9

• 15

If 5 pounds of potatoes cost $3, how much would 8 pounds cost?

• $6.00

• $4.80

• $3.00

• $5.20

A recipe requires 3/4 cup of milk for every 2 cups of flour. How much milk is needed for 6 cups of flour?

• 5 cups of milk

• 3 cups of milk

• 2 cups of milk

• 4.5 cups of milk

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

• 10 gallons

• 8 gallons

• 15 gallons

• 12 gallons

A store sells 3 notebooks for $4.50. How much would 10 notebooks cost?

• $10.50

• $12.00

• $18.00

• $15.00