2. Lesson 7.7 Concept: How to solve problems involving discounts and sales tax. Guidelines: A discount is the difference between the original price and the sale price. A sales tax is an amount added to the price of a purchase.

3. A discount is the difference between the original price and the sale price. Ms.Thomas bought a dress. The original price was $78, and it was discounted 30% off. 1. Find the discount What is 30% of $78? 0.3 78 =$23.40 discount 2. Subtract the discount from the original price. $78.00 - $23.40 $54.60 is the sale price

4. A discount is the difference between the original price and the sale price. Lou found a bat that had an original cost of $125, but it was marked down 20%. What is the sale price? 1. Find the discount What is 20% of $125? 0.2 125 =$25.00 discount 2. Subtract the discount from the original price. $125.00 - $ 25.00 $100.00 is the sale price

5. A sales tax is an amount added to the price of a purchase. A hotel cost $158 per night plus 11.3% sales tax. What is the total cost per night? 1. Find the tax What is 11.3% of $158? 0.113 158 =$17.85 sales tax 2. Add the sales tax to the original price. $158.00 + $ 17.85 $175.85 is the total cost

6. A sales tax is an amount added to the price of a purchase. You buy a stereo for $387.50. What is you total cost if the sales tax is 7.25%? 1. Find the tax What is 7.25% of $387.50? 0.0725 387.50 =$28.09 sales tax 2. Add the sales tax to the original price. $387.50 + $ 28.09 $415.59 is the total cost

7. Sally bought a sofa for $450. It was marked 35% off. The sales tax is 8.5%. Find the total cost of the sofa.