In this lesson from OpenStax Prealgebra 2E, Chapter 6, students learn to solve real-world percent applications including sales tax, commission, discount, and mark-up problems. Using a step-by-step algebraic strategy, students practice translating word problems into percent equations of the form Sales Tax = Tax Rate × Purchase Price and solving for unknowns such as total cost or commission earned. This lesson builds practical math skills applicable to everyday financial situations.
Section 1
📘 Solve Sales Tax, Commission, and Discount Applications
Master real-world financial math! This lesson teaches you to calculate sales tax, commissions, discounts, and mark-ups by applying one strategy: translating word problems into simple percent equations and solving for the unknown.
You've got the big picture. Now, apply this concept by working through interactive examples and then tackling a series of challenge problems on your own.
Section 2
Sales Tax
The sales tax is a percent of the purchase price.
Section 3
Commission
A commission is a percentage of total sales as determined by the rate of commission.
Section 4
Discount
An amount of discount is a percent off the original price.
Section 5
Mark-up
The mark-up is the amount added to the wholesale price.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter
Expand to review the lesson summary and core properties.
Section 1
📘 Solve Sales Tax, Commission, and Discount Applications
Master real-world financial math! This lesson teaches you to calculate sales tax, commissions, discounts, and mark-ups by applying one strategy: translating word problems into simple percent equations and solving for the unknown.
You've got the big picture. Now, apply this concept by working through interactive examples and then tackling a series of challenge problems on your own.
Section 2
Sales Tax
The sales tax is a percent of the purchase price.
Section 3
Commission
A commission is a percentage of total sales as determined by the rate of commission.
Section 4
Discount
An amount of discount is a percent off the original price.
Section 5
Mark-up
The mark-up is the amount added to the wholesale price.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter