01/31 Unit Rates

Selena made pancakes for an all-day breakfast fundraising event. She made 132 pancakes in 4 hours. How many pancakes does she make per hour?

• 23 pancakes

• 32 pancakes

• 33 pancakes

• 34 pancakes

Mary drove 216 miles and used 6 gallons of gasoline on a recent trip. Which of the following represents the unit rate of gasoline used on this trip?

• 3 miles per gallon

• 36 miles per gallon

• 210 miles per gallon

• 222 miles per gallon

A car used 15 gallons of gasoline when driven 315 miles. Based on this information, which expression should be used to determine the unit rate of miles per gallon of gasoline?

Part A: A pet sitter charges $84.00 for 8 hours of work. At this rate, how much does the pet sitter charge per hour?

• $15.00

• $10.50

• $11.50

• $9.50

Part B: Using Part A, how much does the pet sitter charge for 7 hours of work?

• $73.50

• $74.00

• $76.00

• $95.24

Which situation leads to a unit cost of $6 per football ticket?

• $6 paid for 2 football tickets

• $6 paid for 6 football tickets

• 6 football tickets for $24

• 12 football tickets for $72

Car A travels 210 miles in 5 hours. Car B travels 180 miles in 4 hours. Which car is traveling at a faster rate of speed?

• Car A who is traveling at 42 miles per hour

• Car B who is traveling at 45 miles per hour

• Car A who is traveling at 41 miles per hour

• The cars are going the same speed of 45 miles per hour

Mrs. Gardner is going to a concert with friends. She can buy 4 tickets for $50.00 or she can buy 5 tickets for $52.50. Which would be the better deal?

• 4 tickets because they are $10.50 each

• 4 tickets because they are $12.50 each

• 5 tickets because they are $10.50 each

• 5 tickets because they are $12.50 each

A bag contains 6 blue marbles, 8 green marbles, 9 red marbles, and 17 yellow marbles. What is the ratio of blue marbles to total marbles? (Hint: Your answer is in simplest form)

• 1:5

• 1:6

• 3:17

• 3:20

In a group of 20 students, there are 7 boys. What is the ratio of girls to boys?

• 13:20

• 13:7

• 7:20

• 7:13