Percent Sales Tax & Discount

A sales tax is a percentage added to the price of goods and services, collected by the seller and paid to the government.

Total Cost = Original Price + (Original Price × Sales Tax Rate)

Total Cost = $100 + ($100 × 0.06) = $106.

A discount is a reduction in the price of a product or service, usually expressed as a percentage.

Sale Price = Original Price - (Original Price × Discount Rate)

Sale Price = $50 - ($50 × 0.20) = $40.

A tip is a small amount of money given to someone for their service, often expressed as a percentage of the total bill.

Tip = Total Bill × Tip Rate

Tip = $30 × 0.15 = $4.50.

Rounding a number means adjusting it to a nearby value that is simpler or more convenient, often to a specific decimal place.