Ratio/Unit Rates/Equivalent Ratios

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 do you find a unit rate?

Back

To find a unit rate, divide the quantity by the number of units. For example, if you earn $90 in 5 hours, the unit rate is $90 ÷ 5 = $18 per hour.

Front

What is an equivalent ratio?

Back

Equivalent ratios are ratios that express the same relationship between two quantities, even if the numbers are different. For example, 2:3 and 4:6 are equivalent ratios.

Front

If there are 88 students in 4 classes, how many students are in each class?

Back

22 students per class.

Front

What is the ratio of red marbles to yellow marbles if there are 2 red and 5 yellow?

Back

The ratio of red to yellow marbles is 2:5.

Front

If Alycia earned $20.40 in 3 hours, what is her unit rate?

Back

Her unit rate is $6.80 per hour.

Front

Which ratio is equivalent to 5:7?

Back

25:35 is equivalent to 5:7.

Front

What does it mean if two ratios are equivalent?

Back

It means they represent the same proportional relationship between two quantities.

Front

How can you simplify a ratio?

Back

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

Front

What is the unit rate of 90 miles in 3 hours?

Back

The unit rate is 30 miles per hour.