Algebra 1 Section 3 - 7
Algebra 1 Section 3 - 7. Objectives I can find percent of increase or decrease in story problems.
Dec 27, 2015
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Algebra 1
Section 3 - 7
Objectives
• I can find percent of increase or decrease in story problems
Vocabulary
• Percent of Increase – New number is greater than the original
Vocabulary
• Percent of Decrease – New number is less than the original
State whether the following is a percent of increase or a percent of decrease. Then find the percent of change.
Original 32New 40
State whether the following is a percent of increase or a percent of decrease. Then find the percent of change.
Original 32New 40
State whether the following is a percent of increase or a percent of decrease. Then find the percent of change.
Original 32New 40
State whether the following is a percent of increase or a percent of decrease. Then find the percent of change.
Original 32New 40
32x = 800
State whether the following is a percent of increase or a percent of decrease. Then find the percent of change.
Original 32New 40
32x = 800
32 32
x = 25
State whether the following is a percent of increase or a percent of decrease. Then find the percent of change.
Original 32New 40
32x = 800
32 32
x = 25% Increase
State whether the following is a percent of increase or a percent of decrease. Then find the percent of change.
Original 20New 4
State whether the following is a percent of increase or a percent of decrease. Then find the percent of change.
Original 20New 4
State whether the following is a percent of increase or a percent of decrease. Then find the percent of change.
Original 20New 4
State whether the following is a percent of increase or a percent of decrease. Then find the percent of change.
Original 20New 4
20x = 1,600
State whether the following is a percent of increase or a percent of decrease. Then find the percent of change.
Original 20New 4
20x = 1,600
20 20
State whether the following is a percent of increase or a percent of decrease. Then find the percent of change.
Original 20New 4
20x = 1,600
20 20
x = 80
State whether the following is a percent of increase or a percent of decrease. Then find the percent of change.
Original 20New 4
20x = 1,600
20 20
x = 80% Decrease
The National Football League (NFL) has a standard field of 120 yards. The Canadian Football League has a standard field that is 25% longer. What is the length of a CFL field?
The National Football League (NFL) has a standard field of 120 yards. The Canadian Football League has a standard field that is 25% longer. What is the length of a CFL field?
The National Football League (NFL) has a standard field of 120 yards. The Canadian Football League has a standard field that is 25% longer. What is the length of a CFL field?
The National Football League (NFL) has a standard field of 120 yards. The Canadian Football League has a standard field that is 25% longer. What is the length of a CFL field?
100x = 3,000
The National Football League (NFL) has a standard field of 120 yards. The Canadian Football League has a standard field that is 25% longer. What is the length of a CFL field?
100x = 3,000100 100
x = 30
The National Football League (NFL) has a standard field of 120 yards. The Canadian Football League has a standard field that is 25% longer. What is the length of a CFL field?
100x = 3,000100 100
x = 30 150 yards
A used book store will buy a book for $5. The store then sells the book for 25% more. What does a $5 book sell for?
A used book store will buy a book for $5. The store then sells the book for 25% more. What does a $5 book sell for?
A used book store will buy a book for $5. The store then sells the book for 25% more. What does a $5 book sell for?
A used book store will buy a book for $5. The store then sells the book for 25% more. What does a $5 book sell for?
100x = 125
A used book store will buy a book for $5. The store then sells the book for 25% more. What does a $5 book sell for?
100x = 125100 100
x = $1.25 more
A used book store will buy a book for $5. The store then sells the book for 25% more. What does a $5 book sell for?
100x = 125100 100
x = $1.25 more $6.25 Selling Price
The percent of increase is 25%. If the new number is 10, find the original.
The percent of increase is 25%. If the new number is 10, find the original.
The percent of increase is 25%. If the new number is 10, find the original.
The percent of increase is 25%. If the new number is 10, find the original.
25x = 100(10 – x)
25x = 1,000 – 100x+100x +100x125x = 1,000
The percent of increase is 25%. If the new number is 10, find the original.
25x = 100(10 – x)
25x = 1,000 – 100x+100x +100x125x = 1,000125 125
The percent of increase is 25%. If the new number is 10, find the original.
25x = 100(10 – x)
25x = 1,000 – 100x+100x +100x125x = 1,000 x = 8125 125
The percent of increase is 25%. If the new number is 10, find the original.
25x = 100(10 – x)
25x = 1,000 – 100x+100x +100x125x = 1,000 x = 8 original number125 125
Stop the guided notes here. We will finish the rest of the slideshow in class.
A meal for 2 at a restaurant costs $32.75. If the sales tax is 5%, what is the cost of the meal?
A meal for 2 at a restaurant costs $32.75. If the sales tax is 5%, what is the cost of the meal?
A meal for 2 at a restaurant costs $32.75. If the sales tax is 5%, what is the cost of the meal?
A meal for 2 at a restaurant costs $32.75. If the sales tax is 5%, what is the cost of the meal?
100x = 163.75
A meal for 2 at a restaurant costs $32.75. If the sales tax is 5%, what is the cost of the meal?
100x = 163.75100 100
x = 1.6375 in tax
$32.75 + $1.6375 = $34.39
A dog toy is on sale for 20% off the original price of $3.80. What is the discounted price?
A dog toy is on sale for 20% off the original price of $3.80. What is the discounted price?
A dog toy is on sale for 20% off the original price of $3.80. What is the discounted price?
A dog toy is on sale for 20% off the original price of $3.80. What is the discounted price?
100x = 76
A dog toy is on sale for 20% off the original price of $3.80. What is the discounted price?
100x = 76100 100
x = $0.76 less
$3.80 - $0.76 = $3.04
ClassworkPg 162
14 – 44 (even)
Related Documents
