Ratios & Rates Review

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 solve a ratio problem using a tape diagram?

Back

A tape diagram visually represents the parts of a ratio, allowing you to see the relationship between the quantities and solve for unknowns.

Front

If the ratio of girls to boys is 3:8 and there are 48 boys, how many girls are there?

Back

18

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different units, such as miles per hour or price per item.

Front

How can you determine if two ratios are equivalent?

Back

Two ratios are equivalent if they simplify to the same fraction or if their cross products are equal.

Front

What is the ratio of red marbles to blue marbles if there are 2 red marbles for every 3 blue marbles?

Back

The ratio is 2:3.

Front

If 30 kids like grape juice, and the ratio of kids who like grape juice to those who like pineapple juice is 3:4, how many kids like pineapple juice?

Back

40

Front

Are the ratios 4/1 and 20/5 equivalent?

Back

Yes, they are equivalent because both simplify to the same value.

Front

How do you find the better buy between two products?

Back

Calculate the unit price for each product and compare them; the lower unit price indicates the better buy.

Front

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

Back

$0.60 per juice box.