Ratios and Rates

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, showing how many times one value contains or is contained within the other.

Front

How do you write a ratio?

Back

Ratios can be written in three ways: using a colon (e.g., 5:7), using the word 'to' (e.g., 5 to 7), or as a fraction (e.g., \(\frac{5}{7}\)).

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 'per' something (e.g., miles per hour).

Front

How do you find a unit rate?

Back

To find a unit rate, divide the first quantity by the second quantity to determine how much of the first quantity corresponds to one unit of the second.

Front

What is the ratio of boys to girls if there are 5 boys and 7 girls?

Back

The ratio of boys to girls is 5:7.

Front

If 50 people like chocolate ice cream and 75 like vanilla, what is the ratio of chocolate lovers to vanilla lovers?

Back

The ratio of chocolate lovers to vanilla lovers is 2:3.

Front

What is the ratio of red to blue marbles if there are 15 red marbles and 5 blue marbles?

Back

The ratio of red to blue marbles is 3:1.

Front

How do you convert an hourly rate to a per minute rate?

Back

To convert an hourly rate to a per minute rate, divide the hourly rate by 60.

Front

If Serena makes $240 an hour, how much does she make per minute?

Back

Serena makes $4 per minute.

Front

If I can ride my bike 40 miles in 4 hours, what is my rate in miles per hour?

Back

The rate is 10 miles per hour.