P ERCENT I NCREASE OR D ECREASE. H OW CAN YOU USE PERCENTS TO SHOW CHANGE ? Example: To show what...
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Transcript of P ERCENT I NCREASE OR D ECREASE. H OW CAN YOU USE PERCENTS TO SHOW CHANGE ? Example: To show what...
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PERCENT INCREASE OR DECREASE
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HOW CAN YOU USE PERCENTS TO SHOW CHANGE?
Example: To show what percent the prices increase or decrease.
X = Difference between two amounts100 Original Number
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EXAMPLE 1 Prices at a local electronic
store have changed over the years. By what percent did the prices increase or decrease for the stereo system?
X = Difference between two amounts
100 Original Number
X = 37
100 98.95
98.95X = 3700
X≈ 37.4%
Item 1994 2004
StereoSystem
$98.95 $135.95
Cell Phone
$245 $159
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EXAMPLE 2 What percent did the
prices change for the Cell phone?
X = Difference between two amounts
100 Original Number
X = 86
100 245
245X = 8,600
X≈35.1
Item 1994 2004
StereoSystem
$98.95 $135.95
Cell Phone
$245 $159
![Page 5: P ERCENT I NCREASE OR D ECREASE. H OW CAN YOU USE PERCENTS TO SHOW CHANGE ? Example: To show what percent the prices increase or decrease. X = Difference.](https://reader033.fdocuments.us/reader033/viewer/2022061305/55144088550346284e8b48f9/html5/thumbnails/5.jpg)
John David is at the mall and wants to buy a T-shirt that he saw last month for $20. The T-shirt now costs $25. Find the percent increase or decrease.
X = 5 100 20
20X = 500
X≈25% Increase
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RAGS TO RICHES….
http://www.quia.com/rr/230204.html
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1.) Joznel wants to buy a jacket at Justice for $72.00. The jacket is now on sale for $54.00. What is the percent decrease?
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2.) Izzi wants to buy a pair of shoes that originally cost $48. The shoes are on sale and now cost $68. What is the percent increase?
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3.) The pair of basketball sneakers Ross wants to buy is on sale for $114. The original price of the sneakers were $120. What is the percent increase?
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4.) Michael wants to buy a authentic Phillies jersey for $189.00. The jersey is now on sale for $159.00. What is the percent decrease?
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5.) There are 14 people in class on Tuesday. There are 20 people in class on Wednesday. What is the percent increase?
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6.) Kayla needs a new tennis racket. The price of the racket is $65.99. The racket is on sale for $52.95. What is the percent decrease?
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7.) Ms. D is shopping for earrings at Kohl’s. She finds a pair for $36.95. They are on sale for $19.99. What is the percent decrease?
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8.) Layne is at Pacific Sunwear and wants to buy a pair of pants she saw last week for $32.50. The price of the pair of pants is now $45.50. What is the percent increase?
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9.) On Monday, only 15 students brought their textbook to class. On Tuesday, 22 students brought their textbooks to class. What is the percent increase?
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10.) Ms. Nelson also works at Express and receives a store discount. She bought a $75 jacket for $60. What is the percent decrease?
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11.) Megan wants to a ticket for the upcoming Justin Bieber concert. The original price of the concert is $48. The ticket price increased due to popular demand and is now $60. What is the percent increase?
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12.) Mrs. Heywood normally gets wonton soup for lunch. The original price is $4.50. The Chinese restaurant just increased their prices and the soup now costs $5.50. What is the percent increase?