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Example 6.30 from Prealgebra, 6.3 Solve Sales Tax, Commission, and Discount Applications
Solve Sales Tax, Commission, and Discount Applications: example 6.30
Elise bought a dress that was discounted off of the original price of What was ⓐ the amount of discount and ⓑ the sale price of the dress?
Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.
Solution
ⓐ Before beginning, you may find it helpful to organize the information in a list.
Original price = $140
Discount rate = 35%
Amount of discount = ?Identify what you are asked to find. What is the amount of discount? Choose a variable to represent it. Let the amount of discount. Write a sentence that gives the information to find it. The discount is 35% of the original price. Translate into an equation. Simplify. Check if this answer is reasonable. Yes. A $49 discount is reasonable for a $140 dress. Write a complete sentence that answers the question. The amount of discount was $49. ⓑ
Original price = $140
Amount of discount = $49
Sale price = ?Identify what you are asked to find. What is the sale price of the dress? Choose a variable to represent it. Let the sale price. Write a sentence that gives the information to find it. The sale price is the original price minus the discount. Translate into an equation. Simplify. Check if this answer is reasonable. Yes. The sale price, $91, is less than the original price, $140. Write a complete sentence that answers the question. The sale price of the dress was $91.
Your turn
The book's Try It right after this example: same idea, new numbers. Only the answer is given.
Find ⓐ the amount of discount and ⓑ the sale price: Sergio bought a belt that was discounted from an original price of
How did it go?