Ch. 5-7 Percent of change. Ch. 5-7 Vocabulary Percent of change: a ratio that compares the change in quantity to the original amount. Percent of increase:

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Presentation transcript:

Ch. 5-7 Percent of change

Ch. 5-7 Vocabulary Percent of change: a ratio that compares the change in quantity to the original amount. Percent of increase: when the new amount is greater than the original Percent of decrease: when the new amount is less than the original Markup: the increase in the price Discount: when regular price is reduced

Ch. 5-7 Percent of change Percent of change = amount of change original amount Original: 12, new: 9 = =0.25 Percent of decrease is 25% Original: 5, new: 6, find percent of change. 20% increased.

Ch. 5-7 Percent of change Find the selling price Selling price = cost + markup rate The cost of roller blades is $60, 35% markup, find the selling price. Markup rate = $60 x 35% = $60 x 0.35 = $21 Selling price =$60+$21 =$81

Ch. 5-7 Percent of change Find the selling price Selling price = cost + markup rate Cost of jeans: $25, 45% markup, find the selling price. Markup rate = $25 x 45% = $25 x 0.45 = $11.25 Selling price =$25+$11.25 =$36.25

Ch. 5-7 Percent of change Find the Markup Rate Markup Rate = Selling price - cost cost Cost of jeans: $25, sell for $36.25, find the markup rate. = = 0.45 = 45% The markup rate is 45%

Ch. 5-7 Percent of change Find the Markup Rate Markup Rate Selling price - cost cost Find the markup rate on a $60 jacket that sells for $75. = = 0.25 = 25% The markup rate is 25%

Ch. 5-7 Percent of change Find the Sale Price Sale Price Selling price - discount Snowskate: $95, 35% off, find the sale price Amount of discount: =$95*35% =$33.25 Sale price: = $95-$33.25 =$61.75 The Sale price is $61.75

Ch. 5-7 Percent of change Find the Sale Price Sale Price Selling price - discount Television: $675.50, 35% off, find the sale price Amount of discount: =$ x 35% =$ (round to the nearest 100 th ) Sale price: =$ $ =$ The Sale price is $439.08

Ch. 5-7 Percent of change Find the Price including taxes: Selling price + taxes Book bag: $15, tax rate is 6.5%, find the price after taxes. Taxes: =$15 x 6.5% =$0.98 (round to the nearest 100 th ) Price after taxes: =$15 + $0.98 =$15.98 The taxed price is $15.98

Ch. 5-7 Percent of change Find the Price including taxes Selling price + taxes Car: $5000, tax rate is 6.5%, find the price after taxes. Taxes: =$5000 x 6.5% =$325 Price after taxes: =$ =$5325 The taxed price is $5,325

Ch. 5-7 Percent of change Estimate the Price round 21% to 20% Original: $30, markup: 21%, estimate selling price. =$30 x 20% =$6 Selling price: =$30+$6 =$36 The Selling price is about $36

Ch. 5-7 Percent of change Estimate the Price round $59.99 to $60 Original: $59.99, Sale: 40%, estimate selling price. =$60 x 40% =$24 Discounted price: =$60-$24 =$36 The discounted price is about $36