Ratios, Rates, Percents

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

Percent of change is calculated by taking the difference between the new value and the original value, dividing by the original value, and then multiplying by 100.

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

To find the unit price, divide the total price by the number of units. This helps compare prices of different quantities.

Percent = (Part/Whole) x 100.

You pay $51 after the discount.

The unit price is $0.248 per slice.

It will take her approximately 270 minutes to finish the book.

The percent increase is 20%.

To convert a fraction to a percent, divide the numerator by the denominator and multiply by 100.