Featheringill Rates and Unit Rate

Front

What is a unit rate?

Back

A unit rate is a rate in which the unit in the denominator is 1.

Front

How do you calculate the price per gallon of gas?

Back

To find the price per gallon, divide the total cost by the number of gallons. For example, $46.80 ÷ 13 gallons = $3.60 per gallon.

Front

What are the units for speed when describing a car going 50 miles per hour?

Back

The units for speed are miles and hours.

Front

How do you find the cost per pound of dog food?

Back

To find the cost per pound, divide the total price by the weight in pounds. For example, for a 20-lb bag costing $23.44, the cost per pound is $23.44 ÷ 20 = $1.17.

Front

If a cashier rings up 2 customers in 8 minutes, how many customers can he ring up in 30 minutes?

Back

To find the number of customers in 30 minutes, first find the rate: 2 customers ÷ 8 minutes = 0.25 customers per minute. Then multiply by 30 minutes: 0.25 × 30 = 7.5 customers.

Front

What is the formula to calculate unit rate?

Back

Unit rate = Total quantity / Number of units.

Front

If a 40-lb bag of dog food costs $49.00, what is the cost per pound?

Back

Cost per pound = $49.00 ÷ 40 lbs = $1.23 per pound.

Front

What does it mean if a rate is expressed as 'miles per hour'?

Back

It means the distance traveled in miles for every hour of travel.

Front

How can you compare costs of different sizes of dog food bags?

Back

Calculate the cost per pound for each bag and compare those values.

Front

What is the significance of the denominator in a rate?

Back

The denominator indicates the number of units being measured, which helps in understanding the rate.