7.6 percent applications 2

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1. Lesson 7.5 , For use with pages 370-374 Find the new amount. 1. 78 is increased by 5.5% . 2. 61 is decreased by 17% . 2. Lesson 7.5 , For use with pages 370-374 Find…
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  • 1. Lesson 7.5 , For use with pages 370-374 Find the new amount. 1. 78 is increased by 5.5% . 2. 61 is decreased by 17% .
  • 2. Lesson 7.5 , For use with pages 370-374 Find the new amount. 1. 78 is increased by 5.5% . 2. 61 is decreased by 17% . ANSWER 82.29 ANSWER 50.63
  • 3. Percent Applications 7.6
  • 4. Essential Questions <ul><li>What are different situations percents are used in real life? </li></ul><ul><li>As a consumer, why is it important for you to know about percents? </li></ul><ul><li>How important is it to be able to understand the relationship between fractions and percents? Why? </li></ul>
  • 5. Percent of Change <ul><li>Most of the time our setup will be: </li></ul>
  • 6. EXAMPLE 2 Finding a Retail Price x = $19.20 x = $35.20 Clothing A shirt has a wholesale price of $16 . The percent markup is 120%. What is the retail price? STEP 1 Find the amount of the markup. Add the markup to the wholesale price. STEP 2 $16 + $19.20 = $35.20 . ANSWER x 16 = 120 100 100x 16( 120) = 100x 1920 = 100 100 x 16 = 220 100 100x 16( 220) = 100x 3,520 = 100 100
  • 7. GUIDED PRACTICE for Examples 2 and 3 Find the total cost. Round to the nearest cent STEP 2 Add the sales tax to the price . x = $0.445 rounded to $0.45. x = $9.345 rounded to $9.35 7. Price: $8.90 Sales tax: 5% STEP 1 Find the amount of the sales tax. $8.90 + $0.45 = $9.35. ANSWER x 8.90 = 5 100 100x 5( 8.90) = 100x 44.5 = 100 100 x 8.90 = 105 100 100x 105( 8.90) = 100x 934.5 = 100 100
  • 8. Homework <ul><li>Worksheet 7.6 </li></ul>
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