Ratios and Rates

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

How is a ratio expressed?

Back

A ratio can be expressed in three ways: as 'X:Y', 'X to Y', or 'X/Y'.

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different units, 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 denominator is 1, indicating how much of one quantity corresponds to one unit of another quantity.

Front

If a car travels 300 miles in 5 hours, what is the unit rate in miles per hour?

Back

60 miles per hour.

Front

What is the difference between a ratio and a rate?

Back

A ratio compares two quantities of the same kind, while a rate compares two quantities of different kinds.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common factor.

Front

What is the simplest form of the ratio 12:16?

Back

3:4.

Front

If you buy 3 apples for $6, what is the unit price per apple?

Back

$2 per apple.

Front

What is the ratio of 18 ounces to 3 cups expressed as a fraction?

Back

6/1.