Ratios and 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

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 do you write a ratio?

Back

Ratios can be written in three ways: using a colon (X:Y), using the word 'to' (X to Y), or as a fraction (X/Y).

Front

Which of the following is NOT a correct way to write a ratio? X : Y, X and Y, X/Y, X to Y

Back

X and Y is NOT a correct way to write a ratio.

Front

If a car travels 320 miles in 8 hours, what is the unit rate?

Back

40 miles per hour.

Front

What is the simplest form of the ratio 18 ounces to 3 cups?

Back

6 to 1.

Front

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

Back

2:5.

Front

How do you find the unit rate from a total distance and time?

Back

Divide the total distance by the total time.

Front

If a ticket costs $31, what is the cost for 7 tickets?

Back

$217.

Front

What does it mean to express a ratio in simplest form?

Back

It means to reduce the ratio to its lowest terms, where the numbers have no common factors other than 1.