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3.7: Solve Percentage Problems
Do NOW 2/23/2019 4:13 AM 3.7: Solve Percentage Problems
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3.7: Solve Percentage Problems
Worksheet Key 2/23/2019 4:13 AM 3.7: Solve Percentage Problems
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3.7: Solve Percentage Problems
Page 171 2/23/2019 4:13 AM 3.7: Solve Percentage Problems
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Solve Percentage Problems
2/23/2019 4:13 AM 3.7: Solve Percentage Problems
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3.7: Solve Percentage Problems
Review Convert 0.25 to a percentage 2/23/2019 4:13 AM 3.7: Solve Percentage Problems 5
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Steps using Cross Products
Remember, “a is percent of b” using the proportion: Think of: Cross Multiply and Ssolve Check 2/23/2019 4:13 AM 3.7: Solve Percentage Problems
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3.7: Solve Percentage Problems
Example 1 What percent of 25 is 17? 2/23/2019 4:13 AM 3.7: Solve Percentage Problems 7
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3.7: Solve Percentage Problems
Example 2 What percent of 136 is 51? 2/23/2019 4:13 AM 3.7: Solve Percentage Problems 8
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3.7: Solve Percentage Problems
Your Turn What number is 15% of 88? 2/23/2019 4:13 AM 3.7: Solve Percentage Problems 9
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3.7: Solve Percentage Problems
Example 3 20 is 12.5% of what number 2/23/2019 4:13 AM 3.7: Solve Percentage Problems 10
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3.7: Solve Percentage Problems
Example 4 What percentage is the tax of $1.44 on an item priced at $24? 2/23/2019 4:13 AM 3.7: Solve Percentage Problems 11
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3.7: Solve Percentage Problems
Your Turn What is the percentage of 241 freshmen out of 804 students? 2/23/2019 4:13 AM 3.7: Solve Percentage Problems 12
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3.7: Solve Percentage Problems
Example 4 A survey asked 220 students to name their favorite pasta dish. Determine the percentage of students who like lasagna. Pasta Students Spaghetti 83 Lasagna 40 Macaroni 33 Fettuccine 22 Baked Ziti 16 Primavera 15 Other 11 2/23/2019 4:13 AM 3.7: Solve Percentage Problems 13
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3.7: Solve Percentage Problems
Your Turn A survey asked 220 students to name their favorite pasta dish. If 25% of the students enjoyed two different pastas, determine the amount of students. Pasta Students Spaghetti 83 Lasagna 40 Macaroni 33 Fettuccine 22 Baked Ziti 16 Primavera 15 Other 11 2/23/2019 4:13 AM 3.7: Solve Percentage Problems 14
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3.7: Solve Percentage Problems
Assignment Page even, 34, 39 2/23/2019 4:13 AM 3.7: Solve Percentage Problems 15
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