Percentages 8/21/2017.

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Percentages 8/21/2017

General strategy Understand the problem. read and reread the problem Choose a variable to represent the unknown Construct a drawing Translate the problem into an equation Solve the equation Interpret the results

Example 1 The number 63 is what percent of 72? The number 120 is 15% of what number

Example 2 Discounts Cell Phones Unlimited recently reduced the price of the $140 phone by 20%. What is the discount and the new price of the phone? A new treadmill was purchased for $480 and later sold at a garage sale at a discount of 85%. What is the discount and the new price of the treadmill?

Example 3 The tuition and fees of attending a four year college rose from $4020 in 1996 to $7610 in 2011. Find the percent of increase. The tuition and fees cost of attending a two year college rose from $1900 in 1996 to $2710 in 2011. Find the percent of increase.

Bell Ringer 8/22/2017 The number 74 is what percent of 117

Example 4 Find last year’s salary if, after a 4% raise, this year’s salary is $44,200. A gasoline station decreased the price of a $0.95 soda by 15%. What is the new price of the soda?

Due today The number 45 is what percent of 180 The number 126 is 35% of what number A used automobile dealership recently reduced the price of a used car by 8%. If the price of the car before was $18,500, what was the discount and the new price? A birthday celebration meal is $40.50 including tax. Find the total cost if a 15% tip is added to the given cost.