Unit Rates - EX (6.3.1-6.3.5)

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It expresses how much of one quantity corresponds to one unit of another quantity.

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the quantity of one item by the quantity of another item, ensuring the second quantity is 1.

Front

If 5 cups of dog food contain 1600 calories, how many calories are in 1 cup?

Back

320 calories (1600 calories ÷ 5 cups = 320 calories per cup).

Front

How many calories are in 3 cups of dog food if 1 cup has 320 calories?

Back

960 calories (320 calories per cup × 3 cups = 960 calories).

Front

What is the unit rate of earnings if Elijah earns $200 for 8 hours of work?

Back

$25 per hour ($200 ÷ 8 hours = $25 per hour).

Front

If a car travels 160 miles in 4 hours, what is the speed in miles per hour?

Back

40 miles per hour (160 miles ÷ 4 hours = 40 miles per hour).

Front

How far will a car travel in 7 hours at a speed of 40 miles per hour?

Back

280 miles (40 miles per hour × 7 hours = 280 miles).

Front

What is the cost per ounce of a 16 oz orange juice container that costs $1.28?

Back

$0.08 per ounce ($1.28 ÷ 16 oz = $0.08 per ounce).

Front

Which container of orange juice costs the least per ounce: 16 oz for $1.28, 32 oz for $1.92, 64 oz for $2.56, or 96 oz for $2.88?

Back

96 oz for $2.88 (cost per ounce is $0.03).

Front

If a cashier rings up 2 customers in 8 minutes, how many customers can he ring up in 32 minutes?

Back

8 customers (2 customers ÷ 8 minutes = 0.25 customers per minute; 0.25 customers per minute × 32 minutes = 8 customers).