Ratios and Rates

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another.

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different kinds of quantities, such as speed (miles per hour) or price (cost per item).

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is one unit, such as 60 miles per hour or 5 dollars per item.

Front

If there are 30 tenants and the ratio of tenants to cars is 3:5, how many cars are there?

Back

50 cars.

Front

If Justin can type 408 words in 4 minutes, how many words can he type per minute?

Back

102 words per minute.

Front

What is the formula to find a unit rate?

Back

Unit Rate = Total Quantity / Number of Units.

Front

If a car travels 180 miles in 3 hours, what is its speed in miles per hour?

Back

60 miles per hour.

Front

Which of the following is NOT a unit rate: 45 miles per hour, 27 sandwiches in 3 weeks, or 1 lane?

Back

27 sandwiches in 3 weeks.

Front

Jose swims 3 laps in a pool every 2 minutes. How long would it take him to swim 27 laps?

Back

18 minutes.

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, showing the same relationship between the two quantities.