What is a unit rate in math and where are they needed?
Example 1:A car travels 110 kilometer in two hours. How many kilometers does the car travel in one hour?
Solution
The unit rate is
110 kilometer / 2 hours = 55 kilometer/hour or km/hour
The exercises below with solutions and explanations are all about solving rate problems.
Find the unit unit rate in each of the following situations.

I traveled 300 kilometers in 5 hours. Find the unit rate in kilometers / hour

An international phone call costs $10 for 4 minutes. Find the unit rate in dollars / minute.

Joelle reads 18 pages in 9 minutes. Find the unit rate in pages / minute

A car consumes 12 gallons of fuel for a distance of 240 miles. Find the unit rate in miles / gallon.

A pump moves 45 liters of water every 5 minutes. What is the unit rate of the pump in liters / minute?

Joe bought 4 kilograms of apples at the cost of $16. Find the unit rate (or price) in dollars / kilogram

Which moves faster, an object A that moves 15 centimeters every 5 seconds or an object B that moves 24 centimeters every 8 seconds?

Car A consumes 12 gallons of fuel for a distance of 240 miles. Another car B consumes 25 gallons for a distance of 550 miles. Which of the two cars consumes less fuel?

Convert the unit rate 60 kilometers/hour into kilometers / minute.

Convert the unit rate 72 kilometers/hour into meters / second.
Solutions and explanations