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3.5
An item including its tax cost $17. Tax is 8%. What is the cost of the item without tax?
A model of the Gateway Arch in St. Louis, Missouri, was built using a scale of 1 ft : 500 ft. The model is 1.26 feet tall. What is the actual height of the Gateway Arch?
The ratio of male to female students in a class is 4:5. There are 32 students the class. How many female students are in the class?
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3.7.notebook
November 06, 2014
3.6 Answers
p.175 5) 37.5 feet
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November 06, 2014
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Chapter 3 Test is next Friday
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3.7 notes
open books!
p.176
LT: I can solve percent problems.
"a is p percent of b"
Equation
Proportion
p a
=
100
b
(is)
part a = p% b
is
of whole
part
whole (of)
What number is 68% of 25?
What percent of 25 is 17?
17 is 68% of what number?
A $45 shirt is 20% off.
What is the sale price?
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3.7.notebook
November 06, 2014
3.7 CW
p.176­178 (1­9)
Always show all work.
1. 75%
2. 27
3. 87.5%
1­9
4. 20%
5. 41.4
6. 70
7. 104
8. 40
9. 10%
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3.7.notebook
November 06, 2014
3.7 Answers
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