37 Solve Percentage Problems 1 Worksheet Key 842012 1208 PM 37 Solve Percentage Problems 2 Page 171 842012 1216 PM 37 Solve Percentage Problems 3 Solve Percentage Problems 842012 1208 PM ID: 801599
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Slide1
Do NOW
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3.7: Solve Percentage Problems
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Slide2Worksheet Key
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Slide3Page 171
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Slide4Solve Percentage Problems
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Slide5Review
Convert 0.25 to a percentage
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Slide6Steps using Cross Products
Remember, “
a is percent of b” using the proportion:
Think of:
Cross Multiply and
Ssolve
Check
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Slide7Example 1
What percent of 25 is 17?
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Slide8Example 2
What percent of 136 is 51?
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Slide9Your Turn
What number is 15% of 88?
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Slide10Example 3
20 is 12.5% of what number
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Slide11Example 4
What percentage is the tax of $1.44 on an item priced at $24?
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Slide12Your Turn
What is the percentage of 241 freshmen out of 804 students?
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Slide13Example 4
A survey asked 220 students to name their favorite pasta dish. Determine the percentage of students who like lasagna.
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Pasta
Students
Spaghetti
83
Lasagna
40
Macaroni
33
Fettuccine
22
Baked Ziti
16
Primavera
15
Other
11
Slide14Your Tur
n
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.
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Pasta
Students
Spaghetti
83
Lasagna
40
Macaroni
33
Fettuccine
22
Baked Ziti
16
Primavera
15
Other
11
Slide15Assignment
Page
179
4-30 even, 34, 39
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