Unit Rate Word Problems

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 a car travels 300 kilometers in 5 hours, the unit rate is 60 kilometers per hour.

Front

How do you find the unit rate from a word problem?

Back

To find the unit rate, divide the total quantity by the number of units. For example, if 12 apples cost $3, the unit rate is $3 ÷ 12 apples = $0.25 per apple.

Front

Seth prepared 63 kilograms of dough after working 9 hours. How many hours did Seth work if he prepared 77 kilograms of dough?

Back

11 hours

Front

Samantha cycled a total of 32 kilometers by making 16 trips to work. After 31 trips to work, how many kilometers will Samantha have cycled in total?

Back

62 kilometers

Front

Emily jarred 9 liters of jam after 3 days. How many days does Emily need to spend making jam if she wants to jar 12 liters of jam in all?

Back

4 days

Front

Danny read a total of 24 books over 4 months. After belonging to the book club for 8 months, how many books will Danny have read in all?

Back

48 books

Front

Edna bought 8 souvenirs during 2 days of vacation. How many days will Edna have to spend on vacation before she will have bought a total of 16 souvenirs?

Back

4 days

Front

What is the formula to calculate the unit rate?

Back

Unit Rate = Total Quantity / Number of Units.

Front

If a recipe requires 4 cups of flour for 2 cakes, how much flour is needed for 1 cake?

Back

2 cups of flour.

Front

How can you use a proportion to solve unit rate problems?

Back

Set up a proportion comparing the known unit rate to the unknown rate, then cross-multiply and solve.