Compare Unit Rates from Multiple Representations

What is a Ratio?

• Is a comparison of two or more quantities with the same units

• a comparison of two or more quantities with different units

• It is when the only factor the numerator and denominator share is a one

• two items are similar

Simplify the ratio of
35 : 14

• 5 : 2
• 2 : 5
• 3 : 1
• 35: 14

Jose swims 3 laps in a pool every 2 minutes. How long would it take him to swim 27 laps?

• 8 minutes
• 9 minutes
• 16 minutes
• 18 minutes

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound

• $35 per pound

• $5 per pound

• $0.125 per pound

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

What mathematical operation does unit rates involve?

• addition
• subtraction
• multiplication
• division

In an animal shelter, there are 5 dogs for every 20 cats. Which rate best represents the relationship between dogs and cats?

• 10 dogs for every 40 cats
• 1 dog for every 5 cats
• 2 dogs for every 10 cats
• 12 dogs for every 50 cats

At the market, 7 apples cost $4.55. What is the cost per apple?

• 1.54 apples per dollar
• 1.54 dollars per apple
• $0.65 per apple
• not here

8.  Find the unit rate of $97.50 for 15 pizzas.

• $6 per pizza
• $82.50 per pizza
• $5.50 per pizza
• $6.50 per pizza

Which is the better buy?

• A 4 pack of t-shirts for $2.24
• A 6-pack of t-shirts for $3.12
• An 8 pack of t-shirts for $4.24