Unit Rates

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities where one of the quantities is expressed as a quantity of one. For example, if you can run 30 miles in 2 hours, the unit rate is 15 miles per hour.

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the first quantity by the second quantity. For example, if you have 60 apples for $3, the unit rate is 60 ÷ 3 = 20 apples per dollar.

Front

If Ted runs 19.5 meters in 15 seconds, what is his speed in meters per second?

Back

Ted's speed is 19.5 ÷ 15 = 1.3 meters per second.

Front

If Ralph runs 25.2 meters in 18 seconds, what is his speed in meters per second?

Back

Ralph's speed is 25.2 ÷ 18 = 1.4 meters per second.

Front

Who is faster: Ted or Ralph?

Back

Ralph is faster because he runs at 1.4 meters per second compared to Ted's 1.3 meters per second.

Front

What is the unit price of 12 gallons of gas for $33?

Back

The unit price is $33 ÷ 12 = $2.75 per gallon.

Front

What is the unit price of 5 gallons of gas for $14?

Back

The unit price is $14 ÷ 5 = $2.80 per gallon.

Front

Which is the better deal: 12 gallons for $33 or 5 gallons for $14?

Back

12 gallons for $33 is the better deal because it has a lower unit price of $2.75 per gallon.

Front

What is the unit price of bottled water on Monday if 5 bottles cost $12.20?

Back

The unit price is $12.20 ÷ 5 = $2.44 per bottle.

Front

What is the unit price of bottled water on Saturday if 3 bottles cost $7.65?

Back

The unit price is $7.65 ÷ 3 = $2.55 per bottle.