7-6 Percent of Change
Find the percent of change. Then state whether the percent of change is an increase or decrease. Round
to the nearest tenth, if necessary.
From $40 to $32
The percent of change is 20%. Since the percent of change is negative, it is a percent of decrease.
From 56 inches to 63 inches
The percent of change is 12.5%. Since the percent of change is positive, it is a percent of increase.
FINANCIAL LITERACY On Saturday, Smoothie Central made $1300 in sales. On Sunday, they made $900 in
sales. What is the percent of change from Saturday to Sunday?
The percent of change is about 30.8%. Since the percent of change is negative, it is a percent of decrease.
Find the selling price for each item given the cost and the percent of markup.
shoes: $30, 25% markup
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Use the percent equation to find 100% + 25% or 125% of the price. Let p represent the selling price.
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7-6 Percent of Change
The percent of change is about 30.8%. Since the percent of change is negative, it is a percent of decrease.
Find the selling price for each item given the cost and the percent of markup.
shoes: $30, 25% markup
Use the percent equation to find 100% + 25% or 125% of the price. Let p represent the selling price.
The selling price of the shoes is $37.50.
CD player; $45, 31% markup
Let m represent the amount of the markup.
Add the markup to the cost.
45 + 13.95 = 58.95
The selling price of the CD player is $58.95.
BIKES Find the sale price of a bike that is regularly $110 and is on sale for 45% off the original price.
Let d represent the amount of the discount.
Subtract the discount from the original cost.
110 49.50 = 60.50
The sale price of the bike is $60.50.
Find the percent of change. Round to the nearest tenth, if necessary. Then state whether the percent of
change is an increase or decrease.
From 14 inches to 26 inches
The percent of change is approximately 85.7%. Since the percent of change is positive, it is a percent of increase.
From $36 to $48
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7-6 The
Percent
Change
percentof
of change
is approximately 85.7%. Since the percent of change is positive, it is a percent of increase.
From $36 to $48
The percent of change is 33 %. Since the percent of change is positive, it is a percent of increase.
From 82 feet to 74 feet
The percent of change is approximately 9.8%. Since the percent of change is negative, it is a percent of decrease.
From 16 kilograms to 5 kilograms
The percent of change is approximately 68.8%. Since the percent of change is negative, it is a percent of decrease.
From $128 to $112
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7-6 Percent of Change
The percent of change is approximately 68.8%. Since the percent of change is negative, it is a percent of decrease.
From $128 to $112
The percent of change is 12.5%. Since the percent of change is negative, it is a percent of decrease.
From 90 yards to 72 yards
The percent of change is 20%. Since the percent of change is negative, it is a percent of decrease.
From 191 ounces to 270 ounces
The percent of change is approximately 41.4%. Since the percent of change is positive, it is a percent of increase.
From 150 minutes to 172 minutes
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7-6 Percent of Change
The percent of change is approximately 41.4%. Since the percent of change is positive, it is a percent of increase.
From 150 minutes to 172 minutes
The percent of change is approximately 14.7%. Since the percent of change is positive, it is a percent of increase.
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