Target: Solve problems involving mark-ups, discounts, tips and sales tax.

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Presentation transcript:

Target: Solve problems involving mark-ups, discounts, tips and sales tax.

1. Solve the proportion:. Find the percent of change to to 20

 Mark-up: Increase the price  Discount: Decrease the price  Sales Tax: Tax added to the cost of an item The amount added is a percent of the original amount as determined by the government (state or city)

A pawn shop owner buys a ring for $75 and sells it at an 80% mark-up. Find how much the ring sold for.  Method 1: Proportions  Method 2: Percent Equation ◦ x = 80%·75 ◦ x = 0.8·75 ◦ x = 60  Method 3: Percent of Increase  The markup is $60. The total price is = $135.

Sesily found an outfit that is 20% off the original price of $68. Find the discounted price of the outfit.  Method 1: Proportions  Method 2: Percent Equation ◦ x = 20%·68 ◦ x = 0.2·68 ◦ x = 13.6  Method 3: Percent of Increase  The discount is $ The sale price is 68 – = $54.40.

Leah bought a new stereo in Seattle, Washington for $250. Find the actual amount she paid at the checkout if she was charged the state sales tax of 6.5%.  Find 6.5% of $250.  Use the percent equation. x = 0.065·250 x =  Add the tax to the total = $  Leah would pay $ for the stereo.

Leah bought a new stereo in Seattle, Washington for $250. Find the actual amount she paid at the checkout if she was charged the city and state tax combined of 8.45%.  Find 8.45% of $250.  Use the percent equation. x = ·250 x =  Round to nearest cent. x ≈  Add the tax to the total = $  Leah would pay $ for the stereo.

Find each selling (final) price. 1. original price: $20.00 percent of markup: 15% 2. original price: $16.00 percent of discount: 30%

What is something that has had a percent increase of more than 100% in your lifetime?

Percent Applications Lesson 19

Roy paid $8.05 for an antique model truck. It was on sale for 30% off. Find the original price of the model truck.  Roy paid 100% – 30% = 70% of the price.  Let x = original price. Write a proportion.  Use cross products to solve. 70x = 805 x = 11.5  The model truck was originally $11.50.