Ratios, Rates, Proportions

Avery can swim 3 laps in 2 minutes. Madison can swim 5 laps in 4 minutes. Which statement is NOT true?

• Avery can swim 1.5 laps per minute.

• Madison can swim 1.25 laps per minute.

• Avery can swim farther than Madison.

• Madison can swim farther than Avery.

Tony earns $308 for working 14 hours. Richard earns $288 for working 12 hours. Which statement is true? (2 Answers)

• Tony earns $22 per hour.

• Richard earns $25 per hour.

• Tony earns more than Richard.

• Richard earns more than Tony.

A total of 840 students eat breakfast. 1/3 eat a breakfast burrito, 1/6 eat cereal, and 4/15 eat fruit. Which statement is true? (2 Answers)

• 280 students eat burritos.

• 240 students eat cereal.

• Twice as many students burritos than cereal.

• More students eat cereal than fruit.

Freddie mixes 3/4 cups of sugar into 3 cups of water. How many cups of sugar should Freddie mix with 6 cups of water?

The ratio of the number of boys to the number of girls in art class is 5 to 4. If there are 60 girls, how many boys are in art class.

The ratio of a package of corn tortillas to flour tortillas on a store shelf is 7 to 9. What is the part-to-whole ratio for flour tortillas?

• 7:16

• 9:16

• 14:18

• 21:27

Monica earns $198 for working 24 hours a week. How much will she earn if she works 40 hours a week?

• $330

• $255.75

• $297

• $82.50

Megan mixed 5mL of a solution per every gallon of water for her aquarium. Diego mixed 8mL of the solution for every 2 gallons of water for his aquarium. Which statement is true?

• Megan used more solution that Diego.

• Diego used more solution than Megan.

• Diego used 5mL per gallon of water.

• 5:1 and 8:2 are equivalent.

In Carlsbad Caverns, 8 bats ate 40 grams of insects in one night. At this rate, how many grams of insects could 64 bats eat in one night?

A barrel contained 60 gallons of water and water leaked out at a rate of 5 gallons every 3 days. At this rate, how many days did it take for all 60 gallons to leak out.

• 20 days

• 12 days

• 100 days

• 36 days