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Algebra Lesson27.notebook 1 Lesson 2.7 Percent of Change the ratio

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Page 1: Lesson 2.7 Percent of Change - Hortonville Area …...College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%. If the new

Algebra Lesson27.notebook

1

Lesson 2.7

Percent of Change ­the ratio

Page 2: Lesson 2.7 Percent of Change - Hortonville Area …...College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%. If the new

Algebra Lesson27.notebook

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Page 3: Lesson 2.7 Percent of Change - Hortonville Area …...College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%. If the new

Algebra Lesson27.notebook

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Page 4: Lesson 2.7 Percent of Change - Hortonville Area …...College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%. If the new

Algebra Lesson27.notebook

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Cruise: The total number of passengers on cruise ships increased by 10% from 2007 to 2009.  If there were 17.22 million passengers in 2009, how many were there in 2007?

Page 5: Lesson 2.7 Percent of Change - Hortonville Area …...College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%. If the new

Algebra Lesson27.notebook

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Cruise: The total number of passengers on cruise ships increased by 10% from 2007 to 2009.  If there were 17.22 million passengers in 2009, how many were there in 2007?

Page 6: Lesson 2.7 Percent of Change - Hortonville Area …...College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%. If the new

Algebra Lesson27.notebook

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College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%.  If the new cost is $33,408 per year, find the original cost per year.

Page 7: Lesson 2.7 Percent of Change - Hortonville Area …...College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%. If the new

Algebra Lesson27.notebook

7

College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%.  If the new cost is $33,408 per year, find the original cost per year.

Page 8: Lesson 2.7 Percent of Change - Hortonville Area …...College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%. If the new

Algebra Lesson27.notebook

8

Sales Tax & DiscountsLuke had been saving up his allowance for weeks excited to buy Halo 4 at midnight on his birthday.  If Halo 4 cost $59.99 how much would he have to save up total/final cost(include sales tax).  Wisconsin sales tax is 5%(Outagamie County)

Page 9: Lesson 2.7 Percent of Change - Hortonville Area …...College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%. If the new

Algebra Lesson27.notebook

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Sales Tax & DiscountsMr. Hall is saving up to buy a new "manvan" (minivan) to hall around his three growing boys.  The Honda Accord he would like to buy has a list price of $28,000.  With a sales tax of 5.5% how much does he have to have in total?  How much would he have to save up monthly to have all the money up front in 2 years?

Page 10: Lesson 2.7 Percent of Change - Hortonville Area …...College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%. If the new

Algebra Lesson27.notebook

10

Sales Tax & DiscountsMr. Hall is saving up to buy a new "manvan" (minivan) to hall around his three growing boys.  The Honda Accord he would like to buy has a list price of $28,000.  With a sales tax of 5.5% how much does he have to have in total?  How much would he have to save up monthly to have all the money up front in 2 years?

Page 11: Lesson 2.7 Percent of Change - Hortonville Area …...College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%. If the new

Algebra Lesson27.notebook

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Sales Tax & Discounts

Apple Inc has a promotion for schools like Fox West that buy iPads in bulk.  Fox West receives a discount of 18% off the iPad 3 price of $499.  What is the total cost(no sales tax) per iPad after the discount?

Page 12: Lesson 2.7 Percent of Change - Hortonville Area …...College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%. If the new

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Page 13: Lesson 2.7 Percent of Change - Hortonville Area …...College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%. If the new

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1. original: 78

new: 125

percent

increase

final­original =

original

r

100

final­original =

original

r

100

• round to nearest whole percent

Page 14: Lesson 2.7 Percent of Change - Hortonville Area …...College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%. If the new

Algebra Lesson27.notebook

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3. original: 6 candles

new: 8 candles

percent

increase

final­original =

original

r

100

new is the same as final• round to nearest whole percent

Page 15: Lesson 2.7 Percent of Change - Hortonville Area …...College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%. If the new

Algebra Lesson27.notebook

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5. final­original =

original

r

100

• round to nearest whole percent

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Page 18: Lesson 2.7 Percent of Change - Hortonville Area …...College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%. If the new

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Page 19: Lesson 2.7 Percent of Change - Hortonville Area …...College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%. If the new

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Page 20: Lesson 2.7 Percent of Change - Hortonville Area …...College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%. If the new

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Page 21: Lesson 2.7 Percent of Change - Hortonville Area …...College Tuition: A recent percent of increase in tuition at Northwestern University, in Evanston, Illinois, was 5.4%. If the new

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