Proportional Relationships and Ratios Quiz

A recipe calls for 4 cups of flour for every 2 cups of sugar. What is the constant of proportionality between flour and sugar?

• 1

• 2

• 0.5

• 4

If 5 notebooks cost $15, what is the unit rate in dollars per notebook?

• $2

• $3

• $4

• $5

A car travels 180 miles in 3 hours. What is the unit rate in miles per hour?

• 30 mph

• 50 mph

• 60 mph

• 90 mph

Which of the following represents a proportional relationship?

If the ratio of boys to girls in a class is 3:5, which of the following is an equivalent ratio?

• 6:10

• 9:12

• 12:15

• 15:20

A machine produces 240 widgets in 8 hours. What is the unit rate of production in widgets per hour?

• 20 widgets/hour

• 25 widgets/hour

• 30 widgets/hour

• 35 widgets/hour

• 2

• 3

• 4

• 5

A cyclist travels 30 kilometers in 3/4 hour. What is the unit rate in kilometers per hour?

• 112 km/h

• 37.5 km/h

• 35 km/h

• 40 km/h