Ratios and Proportions

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

Write the ratio of 12 CD's to 4 tapes in simplest form.

Back

3/1

Front

What does it mean for two ratios to be in proportion?

Back

Two ratios are in proportion if they are equal to each other.

Front

Are the ratios 9/12 and 27/36 equal?

Back

Yes, they are equal.

Front

Solve for n: 7/n = 14/10.

Back

n = 5.

Front

What is the simplest form of the ratio 5:15?

Back

1:3.

Front

If 5/15 = 25/n, what is n?

Back

n = 75.

Front

Are the ratios 1/3 and 4/12 equal?

Back

Yes, they are equal.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you simplify a ratio?

Back

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