Rates and Ratios

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'.

Front

How do you write the ratio of girls to boys if there are 5 boys and 7 girls?

Back

7 to 5

Front

What is the unit rate?

Back

The unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity per one unit of another quantity.

Front

If an 8 pack of juice boxes costs $4.79, what is the cost per juice box?

Back

$0.60 per juice box.

Front

If a 12 pack of juice boxes costs $6.59, what is the cost per juice box?

Back

$0.55 per juice box.

Front

How do you determine which pack of juice boxes is a better buy?

Back

Compare the cost per juice box for each pack; the one with the lower cost per box is the better buy.

Front

What does it mean for two ratios to be equivalent?

Back

Two ratios are equivalent if they represent the same relationship between quantities, meaning they simplify to the same fraction.

Front

If Mrs. Shelly paid $3 for 6 muffins and Mrs. Kloske paid $9 for 18 muffins, are the ratios equivalent?

Back

Yes, both ratios simplify to 1/2 muffin per dollar.

Front

What is a double number line?

Back

A double number line is a visual representation that shows two related sets of numbers, helping to illustrate ratios and relationships.

Front

If 18 people can go down a slide in 3 minutes, how long would it take for 12 people?

Back

2 minutes.