Calculate and Identify Proportional Relationships in Context

A recipe calls for 2 cups of flour for every 3 cups of sugar. What is the constant of proportionality between flour and sugar?

• 3/2

• 1/2

• 2/3

• 4/3

If a car travels 150 miles on 5 gallons of gas, what is the constant of proportionality for miles per gallon?

• 35 miles per gallon

• 25 miles per gallon

• 40 miles per gallon

• 30 miles per gallon

A map shows that 1 inch represents 20 miles. If you measure a distance of 3 inches on the map, how many miles does that represent?

• 100 miles

• 40 miles

• 60 miles

• 80 miles

A gardener uses 4 liters of water for every 5 plants. What is the constant of proportionality for liters of water per plant?

• 0.8 liters per plant

• 4 liters per plant

• 2 liters per plant

• 1 liter per plant

If a worker earns $120 for 8 hours of work, what is the constant of proportionality for dollars earned per hour?

• 12

• 10

• 20

• 15

A recipe requires 3 tablespoons of oil for every 2 cups of rice. What is the constant of proportionality for tablespoons of oil per cup of rice?

• 2 tablespoons per cup

• 1 tablespoon per cup

• 3 tablespoons per cup

• 1.5 tablespoons per cup

A car can travel 240 miles on 8 gallons of gas. What is the constant of proportionality for miles per gallon?

• 30 miles per gallon

• 20 miles per gallon

• 40 miles per gallon

• 25 miles per gallon

If a store sells 5 notebooks for $10, what is the constant of proportionality for the cost per notebook?

• 5

• 1

• 2

• 3

A painter uses 6 cans of paint for every 4 rooms. What is the constant of proportionality for cans of paint per room?

• 0.75

• 2

• 3

• 1.5

If a cyclist rides 60 miles in 3 hours, what is the constant of proportionality for miles per hour?

• 30 miles per hour

• 25 miles per hour

• 20 miles per hour

• 15 miles per hour