Learn on PengiPengi Math (Grade 7)Chapter 4: Percents and Financial Applications

Lesson 4: Consumer Math: Taxes, Tips, and Discounts

Property The sales tax is a percent of the purchase price.

Section 1

Sales Tax

Property

The sales tax is a percent of the purchase price.

Sales Tax=Tax Rate⋅Purchase Price\text{Sales Tax} = \text{Tax Rate} \cdot \text{Purchase Price}
Total Cost=Purchase Price+Sales Tax\text{Total Cost} = \text{Purchase Price} + \text{Sales Tax}

Section 2

Calculating Tips

Property

A tip (or gratuity) is calculated as a percentage of the subtotal, which is the cost of goods or services before sales tax is added.

Tip Amount=Subtotal×Tip Percentage \text{Tip Amount} = \text{Subtotal} \times \text{Tip Percentage}
Total Bill=Subtotal+Sales Tax+Tip Amount \text{Total Bill} = \text{Subtotal} + \text{Sales Tax} + \text{Tip Amount}

Book overview

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Chapter 4: Percents and Financial Applications

  1. Lesson 1

    Lesson 1: Understanding Percents

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  2. Lesson 2

    Lesson 2: Solving Percent Problems

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  3. Lesson 3

    Lesson 3: Percent Change and Error

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  4. Lesson 4Current

    Lesson 4: Consumer Math: Taxes, Tips, and Discounts

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  5. Lesson 5

    Lesson 5: Simple Interest and Commission

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Lesson overview

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Section 1

Sales Tax

Property

The sales tax is a percent of the purchase price.

Sales Tax=Tax Rate⋅Purchase Price\text{Sales Tax} = \text{Tax Rate} \cdot \text{Purchase Price}
Total Cost=Purchase Price+Sales Tax\text{Total Cost} = \text{Purchase Price} + \text{Sales Tax}

Section 2

Calculating Tips

Property

A tip (or gratuity) is calculated as a percentage of the subtotal, which is the cost of goods or services before sales tax is added.

Tip Amount=Subtotal×Tip Percentage \text{Tip Amount} = \text{Subtotal} \times \text{Tip Percentage}
Total Bill=Subtotal+Sales Tax+Tip Amount \text{Total Bill} = \text{Subtotal} + \text{Sales Tax} + \text{Tip Amount}

Book overview

Jump across lessons in the current chapter without opening the full course modal.

Continue this chapter

Chapter 4: Percents and Financial Applications

  1. Lesson 1

    Lesson 1: Understanding Percents

    LearnPractice
  2. Lesson 2

    Lesson 2: Solving Percent Problems

    LearnPractice
  3. Lesson 3

    Lesson 3: Percent Change and Error

    LearnPractice
  4. Lesson 4Current

    Lesson 4: Consumer Math: Taxes, Tips, and Discounts

    LearnPractice
  5. Lesson 5

    Lesson 5: Simple Interest and Commission

    LearnPractice