Rates Ratios and Proportions Review

What is the ratio of red apples to green apples?

• 7 apples to 3 green

• 4 red apples to 7 apples

• 4 red apples to 3 green apples

• 3 green apples to 4 red apples

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound

• $5 per pound

• $35 per pound

• 0.125 pounds per dollar

Tyler earned $76 for babysitting 8 hours. If Tyler is paid the same rate, how much will he earn for babysitting 12 hours?

• $9.50

• $76

• $114

• $608

In the equation y = 14x, what is the constant of proportionality?

• y

• x

• 14

• x/y

The constant of proportionality of this graph is k = 45. What does it mean?

• The boat travels for 45 miles for every 45 hours

• The boat travels 1 mile for every 45 hours

• The boat travels 45 miles for every 1 hour

• The boat travels 1/45 mile for every 1 hour

A car travels 320 miles in 8 hours. What is the unit rate?

• 45 miles per hour

• 80 miles per hour

• 40 miles per hour

• 60 miles per hour

Jeff ran 6 miles in 4 hours. At this rate, how many miles will he run in 6 hours?

• 9 miles

• 4 miles

• 6 miles

• 36 miles

A car travels 132 miles on 4 gallons of gas. At the same rate, how many gallons of gas are needed to travel 231 miles?

• 7 gallons

• 12 gallons

• 33 gallons

• 35 gallons

What is the constant of proportionality? 

• 1/3

• 3

• 5

• 10

Write the equation for the table given.

• y = 1/3x

• y = 3x

• y = 1/2x

• y=x