1. 3.7: Solve Percentage Problems
Do NOW
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3.7: Solve Percentage Problems

2. 3.7: Solve Percentage Problems
Worksheet Key
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3.7: Solve Percentage Problems

3. 3.7: Solve Percentage Problems
Page 171
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3.7: Solve Percentage Problems

4. Solve Percentage Problems
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3.7: Solve Percentage Problems

5. 3.7: Solve Percentage Problems
Review
Convert 0.25 to a percentage
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6. Steps using Cross Products
Remember, “a is percent of b” using the proportion:
Think of:
Cross Multiply and Ssolve
Check
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3.7: Solve Percentage Problems

7. 3.7: Solve Percentage Problems
Example 1
What percent of 25 is 17?
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8. 3.7: Solve Percentage Problems
Example 2
What percent of 136 is 51?
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9. 3.7: Solve Percentage Problems
Your Turn
What number is 15% of 88?
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10. 3.7: Solve Percentage Problems
Example 3
20 is 12.5% of what number
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11. 3.7: Solve Percentage Problems
Example 4
What percentage is the tax of $1.44 on an item priced at $24?
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12. 3.7: Solve Percentage Problems
Your Turn
What is the percentage of 241 freshmen out of 804 students?
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13. 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
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14. 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
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15. 3.7: Solve Percentage Problems
Assignment
Page even, 34, 39
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