Ch 5 Rates Review

Which statement is expressed as a unit rate?

• Sophie picked 25 strawberries per minute

• Owen swam 450 meters in 9 minutes

• Mr. Lee volunteers at the animal shelter twice a week

• Jack scored 9 goals in 15 soccer matches.

Chris drives his car at an average speed of 60 kilometers per hour. How many hours will he take to drive 210 kilometers?

• 3

• 3.5

• 4

• 4.5

A, B, and C are three landmarks in a national park. Landmarks A and B are 650 meters apart. Landmarks B and C are 822 meters apart. Carla takes 4 minutes to run from Landmark A to Landmark B, and another 6 minutes to run from Landmark B to Landmark C. What is Carla's average speed in meters per minute for the run from Landmark A to Landmark C?

• 368

• 299.5

• 147.2

• 86

Water is poured into a tank at a rate of 15 liters every 8 minutes. At this rate, how much water in liters will be poured into the tank in 20 minutes?

• 37.5

• 18.75

• 10.67

• 1.875

Water is poured into a tank at a rate of 15 liters every 8 minutes. At this rate, how many minutes will it take to fill the tank with 270 liters of water?

• 38

• 96

• 144

• 506

Rachel paid $1,620 for 24 days of work. How much is she paid per day?

• $67.50

• $65

• $167.50

• $6.75

A grocery store sells three brands of laundry detergent.

Brand A is $17.94 for 150 oz.

Brand B is $6.31 for 40 oz.

Brand C is $9.94 for 100 oz.

Which brand of laundry detergent should Mr. Martin buy, assuming that all the three brands are the same quality?

• Brand A

• Brand B

• Brand C

James went on a 16.2 mile hike. If he walked at an average speed of 3 miles per hour, how many hours did he take to complete the hike?

• 8 hours

• 5.4 hours

• 4.5 hours

• 3 hours

Sofia drove from Wisconsin to Wyoming. She drove for 7 hours at an average speed of 68 miles per hour. She then drove the remaining 554 miles in $10\ \frac{1}{6}$  hours. What was Sofia's average speed in miles per hour for the whole journey?

• 60 miles per hour

• 70 miles per hour

• 50 miles per hour

• 65 miles per hour

Below are the fees of a parking lot.

First 2 hours = $5
Every  $\frac{1}{2}$   hour (or part of a half hour) afterward = $3.50

Mr. Garcia parked his car from 5:00pm to 11:15pm on the same day.  How much did he pay for parking?

• $35

• $36.50

• $32.50

• $33