Ratio and Rates Review

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a to b' or a:b.

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the first quantity by the second quantity to find out how much of the first quantity corresponds to one unit of the second quantity.

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

If 190 people fit in 3 buses, how many people fit in one bus?

Back

To find the number of people per bus, divide 190 by 3, which equals about 63.33 people per bus.

Front

What is the win to loss ratio of a baseball team with 3 wins and 4 losses?

Back

The win to loss ratio is 3:4.

Front

How do you find the total number of games played from a win to loss ratio?

Back

Add the two parts of the ratio together. For a 3:4 ratio, total games = 3 + 4 = 7.

Front

What is a unit rate example?

Back

An example of a unit rate is 45 miles per hour, which shows how many miles are traveled in one hour.

Front

If the waiting time for 150 people is 20 minutes, how do you find the waiting time for 240 people?

Back

Set up a proportion: 150 people/20 minutes = 240 people/x minutes. Cross-multiply and solve for x.

Front

What is the ratio of kittens to total animals if there are 3 puppies and 5 kittens?

Back

The ratio of kittens to total animals is 5 to 8, or 5:8.

Front

What does it mean if a ratio is expressed as 3:7?

Back

It means for every 3 parts of one quantity, there are 7 parts of another quantity.