Unit Rates and Comparing 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 4 apples cost $2, the unit rate is $0.50 per apple.

Front

How do you calculate the cost per item?

Back

To calculate the cost per item, divide the total cost by the number of items. For example, if 7 apples cost $4.55, the cost per apple is $4.55 ÷ 7 = $0.65.

Front

What is the formula for finding the unit rate?

Back

The formula for finding the unit rate is: Unit Rate = Total Quantity / Total Cost.

Front

If 20 tickets cost $250, how much does one ticket cost?

Back

To find the cost of one ticket, divide the total cost by the number of tickets: $250 ÷ 20 = $12.50.

Front

How do you compare unit rates?

Back

To compare unit rates, calculate the unit rate for each option and then compare the values. The option with the lower unit rate is the better buy.

Front

What is the unit rate of pages read per minute if 68 pages are read in 34 minutes?

Back

The unit rate is 68 pages ÷ 34 minutes = 2 pages per minute.

Front

If a 12 pack of Coke costs $3.50, what is the cost per can?

Back

The cost per can is $3.50 ÷ 12 = approximately $0.29 per can.

Front

What is the better buy: 6 packs of Coke for $1.80 or 12 packs for $3.50?

Back

Calculate the unit rate for both: 6 pack: $1.80 ÷ 6 = $0.30 per can; 12 pack: $3.50 ÷ 12 = approximately $0.29 per can. The 12 pack is the better buy.

Front

How many words can Charles type per minute if he types 675 words in 9 minutes?

Back

Charles can type 675 words ÷ 9 minutes = 75 words per minute.

Front

What is the unit rate of speed if a car travels 150 miles in 3 hours?

Back

The unit rate of speed is 150 miles ÷ 3 hours = 50 miles per hour.