Ratios, Rates and Unit 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, often expressed as 'a to b' or a:b.

Front

How do you simplify a ratio?

Back

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

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity, often expressed as 'x per 1 unit'.

Front

If you spend $40 on 5 pounds of concrete, what is the unit rate in dollars per pound?

Back

$8 per pound.

Front

What is the ratio of 35 to 14 simplified?

Back

5 : 2.

Front

If Jose swims 3 laps in 2 minutes, how long will it take him to swim 27 laps?

Back

18 minutes.

Front

What is the ratio of red apples to green apples if there are 4 red apples and 3 green apples?

Back

4 red apples to 3 green apples.

Front

In a computer lab with 1 PC for every 5 Macs, how many Macs are there if there are 24 computers total?

Back

20 Macs.

Front

What is the formula to find a unit rate?

Back

Unit Rate = Total Quantity / Number of Units.

Front

How do you convert a ratio into a fraction?

Back

To convert a ratio into a fraction, write the first quantity as the numerator and the second quantity as the denominator.