Compare Rates Word Problems

Megan and Desmond each added the same amount of water to their aquariums. Megan mixed 5 mL of a chemical solution with every gallon of water for her aquarium. Desmond mixed 8 mL of the chemical solution with every 2 gallons of water for his aquarium. Which of these statements is true?

• Megan used more solution per gallon of water than Desmond, because 5 : 1 is greater than 8:2.

• Megan used more solution per gallon of water than Desmond, because 5 mL is greater than 2 mL.

• Desmond used more solution per gallon of water than Megan, because 8 mL is greater than 5 mL.

• Desmond used more solution per gallon of water than Megan, because 8 : 2 is greater than 5:1.

Pranav took a trip to Jordan. Upon leaving he decided to convert all of his Dinars back into dollars. How many dollars did he receive if he exchanged 16 Dinars at a rate of 2 Dinars for every $3?

• $10.67 

• $22

• $24

• $20

Which of the following is a UNIT RATE?

• 10 miles / 2 hours

• $6 for each hour

• 1 box / $3

• 15 pounds every 5 servings

$279 for 9 concert tickets. Find the cost per ticket.

• $31

• $39

• $2,511

• $34

A store sees 120 customers in 8 hours. What is the unit rate (in customers per hour)?

• 16 customers per hour

• 15 customers per hour

• 12 customers per hour

• 20 customers per hour

You can buy 36 cookies for $4. What is the unit rate (in cookies per dollar)?

• 4 cookies per dollar

• 6 cookies per dollar

• 9 cookies per dollar

• 1/9 dollars per cookie

A store has 120 customers in 6 hours. What is the unit rate in customers per hour?

• 16 customers per hour

• 12 customers per hour

• 20 customers per hour

• 15 customers per hour

If Antonia can type 408 words in 4 minutes, how many words can she type per minute?

• 408 words per minute

• 100 words per minute

• 400 words per minute

• 102 words per minute

Which operation do you use to solve for unit rate?

• Multiplication

• Division

• Addition

• Subtraction

When finding a UNIT RATE, you should __________ the top number by the bottom number.

• Add

• Subtract

• Multiply

• Divide