Solve Problems With Unit Rates

One real world example of when we use rates and unit rates is ______________________________________.

• miles per hour

• apples to oranges

• girls to boys

• teachers to students

Which of the following is a UNIT RATE?

• 10 miles / 2 hours

• $6 for each hour

• 1 box / $3

• 15 pounds every 5 servings

You can buy 5 cans of green beans at the Village Market for $2.50, or you can buy 10 of them at Best Food for $ 5.10. Which is the better buy?

• Village Market

• Best Food

Which runs faster: a cheetah that can run 60 feet in 4 seconds or gazelle that can run 100 feet in 8 seconds?

• cheetah at a unit rate of 14 ft per sec

• gazelle at a unit rate of 12 ft per sec

• cheetah at a unit rate of 15 ft per sec

• gazelle at 12.5 ft per sec

The secretary in the main office can type 225 words in 3 minutes, while the computer teacher can type 105 words in 90 seconds. Can we still compare the unit rates? Who types at a faster rate? Don't forget to first convert to the same unit (seconds or minutes).

• Main office secretary 

• Computer teacher 

• They type at the same rate

• You can't do anything to compare seconds and minutes

During the winter of 2012–2013, Buffalo, New York received 𝟐𝟐 inches of snow in 𝟏𝟐 hours. Oswego, New York received 𝟑𝟏 inches of snow over a 𝟏𝟓-hour period. Which city had a heavier snowfall rate? Round your answers to the nearest tenth

• Buffalo at a rate of 1.83 per sec

• Oswego at a rate of 2.07 per sec

• Buffalo at a rate of 1.8 per sec

• Oswego at a rate of 2.1 per sec

One math student, John, can solve 𝟔 math problems in 𝟐𝟎 minutes while another student, Juaquine, can solve the same 𝟔 math problems at a rate of 𝟏 problem per 𝟒 minutes. Who works faster?

• John can solve faster

• Juaquine can solve faster

• They solve at the same rate

• #mathsohard

Hamburger sells for 3 pounds for $6. If Alicia buys 10 pounds of hamburger, how much will she pay?

• $30

• $20

• $60

• $10

Austin mowed 7 lawns in 4 hours. At that rate, how long will it take him to mow 21 lawns?

• 11 hours

• 12 hours 

• 21 hours

•  28 hours.

A rate is a ratio that compares 2 different_______________________________.

• people

• units/measurements

• fractions

• denominators