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Discounts, markups and percent of change

Discounts, markups and percent of change. Friday, January 4, 2013. Warm up: . Solve and graph the operation on a number line: 1. -5 - (-3) = 2. -8 + 7 = 3. 6 - (-5) = Solve: 4. Find the average of the following numbers: -2, 12, -8, 15.

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Discounts, markups and percent of change

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  1. Discounts, markups and percent of change Friday, January 4, 2013

  2. Warm up: Solve and graph the operation on a number line: 1. -5 - (-3) = 2. -8 + 7 = 3. 6 - (-5) = Solve: 4. Find the average of the following numbers: -2, 12, -8, 15

  3. Check homework Post answers to the word problems at the end of the Wikispace homework. Take the time to go over the problems.

  4. Let’s check our work:

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  12. Quick Study! Percent of change How can you use %/100 = part/whole to find the following percent increases and decreases? 1. From 100 to 114 2. From 2.0 to 3.2 3. From 202 to 192 4. From 854.5 to 60.6

  13. Discounts & Markups What is a discount? A discount is the price decrease when a item goes on sale. Sale price = regular price – discount What is a markup? A markup is the amount more that they charge for an item than what they bought it for. It is how they make a profit.

  14. Example 1- Discounts Athletic shoes that regularly sell for $85.99 are on sale for 20% off. 1.Set up a proportion to help you find the discount amount. Find that amount. 2.Find the sale price and be prepared to explain how you found the sale price.

  15. Example 2- Discounts A video game that regularly sells for $39.95 is on sale for 20% off. Find the discount amount and the sale price.

  16. Example 3: Discounts Peaches that are usually priced at $2/lb are on sale for 15% off. Find the discount amount and the sale price.

  17. Example 1: markups A music store’s percent of markup is 67%. A CD costs the store $10.15. Find the markup and how much the will charge the customer for the CD.

  18. Example 2: markups A computer store pays $6 for a computer mouse. The percent of markup is 75%. Find the markup amount and what the store will selling price of the mouse.

  19. Example 3: markups A cap that cost a retailer $5 was marked up by 75%. Find the selling price as well as the markup amount.

  20. Homework MA7+: Textbook pages 331 – 332 #1-28, evens and #29-31, all MA7: Textbook pages 326 #7-16 (all)

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