All Types of Percents

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.

Front

How do you calculate the percent increase?

Back

Percent Increase = ((New Value - Old Value) / Old Value) x 100.

Front

What is the formula to calculate simple interest?

Back

Simple Interest = Principal x Rate x Time.

Front

If you have a 7.5% sales tax on a $100 purchase, how much is the tax?

Back

Sales Tax = Purchase Price x Sales Tax Rate = $100 x 0.075 = $7.50.

Front

What is markup in terms of percent?

Back

Markup Percent = ((Selling Price - Cost Price) / Cost Price) x 100.

Front

How do you convert a fraction to a percent?

Back

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

Front

What is the percent of a number?

Back

Percent of a number = (Percent / 100) x Total Number.

Front

If a stock increases from $100 to $125, what is the percent increase?

Back

Percent Increase = ((125 - 100) / 100) x 100 = 25%.

Front

What does it mean to find the total cost including tax?

Back

Total Cost = Original Price + (Original Price x Sales Tax Rate).

Front

How do you find the original price before tax if you know the total cost?

Back

Original Price = Total Cost / (1 + Sales Tax Rate).