Proportionality Lesson with Percents

Multiple Choice

It takes an ant farm 3 days to consume $$\frac{1}{2}$$ of an apple. At that rate, in how many days will the ant farm consume 3 apples?

• 18 days
• 6 days
• 24 days
• 12 days

Multiple Choice

To make a shade of paint called jasper green, mix 4 quarts of green paint with $$\frac23$$ cup of black paint. How much green paint should be mixed with $$4\frac12$$ cups of black paint to make jasper green?

• 50 cups
• 72 cups
• 108 cups
• 90 cups

Multiple Choice

An airplane is flying from New York City to Los Angeles. The distance it travels in miles, $$d$$ , is related to the time in seconds, $$t$$ , by the equation $$d=\frac{3}{20}t$$ . How fast is it flying? Be sure to include the units.

• 300 miles per hour
• 450 miles per hour
• 600 miles per hour
• 540 miles per hour

Multiple Choice

An airplane is flying from New York City to Los Angeles. The distance it travels in miles, $$d$$ , is related to the time in seconds, $$t$$ , by the equation $$d=\frac{3}{20}t$$ . How far will it travel in 30 seconds?

• 3 miles
• 4.5 miles
• 5 miles
• 6 miles

Multiple Choice

An airplane is flying from New York City to Los Angeles. The distance it travels in miles, $$d$$ , is related to the time in seconds, $$t$$ , by the equation $$d=\frac{3}{20}t$$ . How long will it take to go $$12\frac34$$ miles?

• 100 seconds
• 75 seconds
• 90 seconds
• 85 seconds

Multiple Choice

A grocer can buy strawberries for $1.38 per pound. Which equation correctly relates $$c$$ , the cost, and $$p$$ , the pounds of strawberries?

• c = p - 1.38
• c = 1.38 + p
• c = 1.38p
• c = 1.38p^2

Multiple Choice

A grocer can buy strawberries for $$1.38 per pound. A strawberry order costs$$ 241.50. How many pounds did the grocer order?

• 150.0
• 175.0
• 180.0
• 200.0

Multiple Choice

A cookie recipe uses 3 cups of flour to make 15 cookies. If you had 4 cups of flour, how many cookies could you make with this recipe? (Assume you have enough of the other ingredients.)

• 20 cookies

• 18 cookies

• 15 cookies

• 12 cookies

Multiple Choice

A teacher uses 36 centimeters of tape to hang up 9 student projects. At that rate, how much tape would the teacher need to hang up 10 student projects?

• 40 centimeters
• 45 centimeters
• 50 centimeters
• 30 centimeters

Multiple Choice

A runner is running a 10 km race. It takes her 17.5 minutes to reach the 2.5 km mark. At this rate, how long will it take her to run the whole race?

• 60 minutes
• 80 minutes
• 90 minutes
• 70 minutes