Rates and Unit Rate Analysis

A rate is a ratio that compares

• A part to a part

• A part to a whole

• Quantities with different units

• Quantities with the same units

A car is going 50 miles per hour. A rate that describes this would have units of

• Miles and cars

• Miles and hours

• Miles only

• Hours only

If Maya makes $10 an hour at her after school job, how many hours will it take her to earn $150?

• 10 hours

• 1.5 hours

• 15 hours

• 20 hours

You go to the grocery store to buy dog food. The store has three sizes available:
A 20-lb bag for $23.44
An 8-lb bag for $9.88
A 40-lb bag for $49.00
Which size bag has the lowest cost per pound rounded to the nearest cent?

• The 8-lb bag

• The 20-lb bag

• The 40-lb bag

• I have a cat

Find the unit rate miles per hour.

• 24 miles per hour

• 3 miles per hour

• 1 miles per hour

• 8 miles per hour

Jan ran 5 miles in 48 minutes. What was her time per mile?

• 10 min/mi

• 9.6 min/mi

• about 12 min/mi

• 9.5 min/mi

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

• $31

• $39

• $2,511

• $34

Density is the ratio of mass to volume. A 3-liter jug of honey has a mass of 4.5kg. Write the density of honey as a unit rate.

• 1 liter-jug has a mass of 13.5kg

• 1-liter jug has a mass of 1.5kg

• 1.5 liter-jug has a mass of 1kg

• not here

1500 students and 75 classrooms. Create a unit rate.

• 20 classrooms to 1 student

• 20 students to 1 classroom

• 1,125 classroom to 100 students

• not here

My mother purchased 8 Pepsi products at Bi-Lo for $14.00.  What is the price per product?

• $2.00 per product

• $1.50 per product

• $1.75 per product