Application of Percents

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Presentation transcript:

Application of Percents Textbook pages 322-326

Warm up Write each percent as a decimal and as a fraction in SIMPLEST FORM! 105% 2. 118% 3. 250% 4. 0.5% 5. 0.3% 6. 0.8%

Application of % Vocab What is sales tax? The sales tax is a percent of the purchase price.(Tax Rate) Sales Tax= tax rate(%) x purchase price A desk you plan to buy costs $159.99. In the state where are shopping, the sales tax rate is 6%. What will you pay for the desk? Sales Tax= 0.06 x 159.99 Sales tax= 9.60 Total purchase= purchase price + sales tax 159.99 +9.60= 169.59 Answer is $169.59

Check for understanding The store has a bigger desk that cost $182.99. You have only $200 to spend. Do you have enough money for the bigger desk? The sales tax rate is 6%. Find the payment for the purchase of $37.50 with a sales tax rate of 4%.

Application of % What is a tip? What is the standard tipping rate? A tip is a percent of a bill that you give to the person providing a service. The standard tipping rate is 10% to 20%. 10% -poor service 15% average service 20% excellent service

Application of % tip Suppose you treat a friend to lunch. The total cost of the food items is $9.68. There is a 7% sales tax that will be added to you food and you want to leave a 20% tip for excellent service. How much will the total bill be? ** Highlight/underline important info** Step 1:find sales tax sales tax= tax rate x purchase price Step 2: Find the tip tip= % tip x purchase price Step 3: Add everything purchase price + tip+ sales tax

Check for understanding Find 127% of $9.68. Is your answer the same as the answer in the previous example? Explain. You order a pizza for home delivery. There is a 5% delivery fee, and you want to give the driver a 20% tip. If the pizza costs $12.60, how much should you pay the driver?

Application of % commission What is commission? Jobs that pay commission- realtor, jewelry sales, Buckle clothing, telemarketing, Sales representative at companies and many more. Some sales jobs pay you a percent of the amount you sell. This percent is called a commission. A commission may be paid in addition to a salary.

Application of % commission Commission= commission rate x sales Find the commission on a $500 sale, with a commission rate of 12.5% 0.125 x 500  change % into a decimal 62.5 The commission is $62.50 for a $500 sale.

Application of % commission A sales person receives a salary of $650 each week, plus a commission of 4% of all sales. In one week , his sales are $1,250. What does the sales person earn that week? Total earnings= salary + commission Salary=$650 Commission = 0.04 x 1,250 Commission = 50 Total earning= 650 + 50 Total= $700

Check for understanding A sales person has a weekly salary of $800 and a commission rate of 3.5% of sales. Find the salesperson’s earnings for a week when sales are $1.400

EXTRA CREDIT ASSIGNMENT Next time you go out to eat calculate your waiter or waitresses tip for your parents. Take a Piece of notebook paper with you and work out their tip. Show your work. Have your parents and your server sign off your work. Replace low quiz grade!!!

Homework assignment 3/13/13 Page 324 1-5, 12-42