Ratios, Rates and Unit Rates ACC

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:b'.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD).

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 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 $3 per item.

Front

If 2 suckers cost $1, what is the unit rate?

Back

The unit rate is $0.50 per sucker.

Front

In a ratio of 3:5, if there are 15 parts total, how many parts correspond to each quantity?

Back

3 parts correspond to 9 and 5 parts correspond to 15.

Front

If a recipe calls for a ratio of 2:3 for sugar to flour, how much sugar is needed for 9 cups of flour?

Back

6 cups of sugar are needed.

Front

What is the ratio of lemon juice to water in Ella's Delicious Lemonade?

Back

The ratio is 3 cups of lemon juice to 5 cups of water.

Front

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

Back

There are 50 cars.

Front

How do you find the cost per pound if 4 pounds of bananas cost $6?

Back

Divide the total cost by the number of pounds: $6 ÷ 4 = $1.50 per pound.