Mix Review of Proportionals

Set up the following proportion: Pens are 3 for $0.69 at the supply store. What proportion can be used to find p, the amount it will cost Mrs. Faber to buy 180 pens? 

• 3/0.69 = x/180
• 0.69/180 = x/3
• 3/0.69 = 180/x

What is the constant rate of change for this proportion: It cost Jericho and his 3 friends $20 to get into the skating rink. What proportion can be used to find c, the amount it will cost Jericho’s parents if they have Jericho’s birthday party at the skating rink and pay for Jericho and all 24 of his classmates? 

• $4
• $5
• $6.25
• $1

Solve the following proportion: Vito uses 9 liters of water to water 24 flower pots. He is wondering how many liters of water (w), it would take to water 40 flower pots. He assumes he'll use the same amount of water on each pot.

• 15 liters
• 5.4 liters
• 106.7 liters
• 50 liters

Jonas wants to mail a package that weighs 8.5 kilograms. How much does the package weigh in pounds? (1 kg ≈ 2.2 pounds)

• 10.7 lb
• 8.24 lb
• 3.9 lb
• 18.7 lb

Beryl made 5 gallons of lemonade for a family gathering. About how many liters of lemonade did Beryl make? (1 gal = 3.79 liters)

• 5 L
• 37 L
• 18.95 L
• 15 L

Mason ran 3 miles in 20 minutes. What is his unit rate of miles per hour?

• 400 miles per hour
• 9 miles per hour
• 20 miles per hour
• 6.67 miles per hour

Write as a unit rate. 
144 pages in 3 minutes. 

• 48 
• 48 pages per minute
• 0.02
• 0.02 pages per minute 

Write as a unit rate. 
$12 for 5 boxes of cereal. 

• 2.4
• $0.41 
• $2.40 per box
• 0.41

Which is the better deal?
Option A: $15.40 for 3.5 lbs. of gummy bears. 
Option B: $7.65 for 1.8 lbs. of gummy bears. 

• Option A
• Option B

Determine whether the ratios form a proportion. 

• Yes
• No