Tues. 2/12 Starter #2

1) Jamiel went to the store to buy a flat screen TV that was on sale for 30% off. The original price was $549. How much was the discount and how much is the new price?

2) The newest version of a video game is listed at $55.00. Best Buy is having a sale and has listed the sale price as $44.00. What percent is the discount?

TAKE OUT A CALCULATOR

Sales TaxSales Tax&&

Leaving a TipLeaving a Tip

Learning Targets

• # 10: I can calculate sales tax. B: 1 2 3 A: 1 2 3

I have these questions: 7NS1.3

Learning Targets

• # 11: I can calculate tips. B: 1 2 3 A: 1 2 3

I have these questions: 7NS1.3

Sales tax is calculated by multiplying theretail price of an item by the sales tax rate.METHOD 1

Example: Shoes $100 Tax Rate 7%

Sales Tax $100 x 0.07 = $7.00

Total Purchase Price $100 + $7.00 = $107

Sales tax is calculated by multiplying theretail price of an item by the sales tax rate.

Example: Shoes $100 Tax Rate 7%

Add 7% to 100% since that includes the total price and the tax. Find 107% of $100.

Find total $100 x 107% Multiply $100 x 1.07 = $107

Both methods give you the same answer!

METHOD 2

A family purchased a pool table for $825. The sales tax rate was 7%. What was the total cost?

Method 1Add sales tax to the price:$825 x 7% = tax$825 x 0.07 = $57.75$825 + $57.75 = $882.75

Method 2Multiply the price by 107% since 7% is added to the cost.$825 x 107% = total cost$825 x 1.07 = $882.75

So, the total cost of the purchase was $882.75.

As a courtesy it is always nice to leave a tip when someone does something nice for you.

Many different types of professions work for tips

A pizza delivery man A waiter or waitress A hairdresser or barber

Usually the amount of tip depends on how well you think the service was.

If you get really good service at a restaurant it is usually due to having a good waitress.

A good tip for a waitress is 18%.

If the service was not as well as you liked then you can leave a smaller tip such as 10% or 5%.

You and a friend go to lunch. The check comes to $24.85. Figure out how much you should tip if you want to leave 15%. Make an estimate first using benchmarks. Find 10% of 25 = $2.50

Then Find 5% of 25 = $1.25

= $3.75An estimate for the tip is about $3.75

You and a friend go to lunch. The check comes to $24.85. Figure out how much you should tip if you want to leave 15%.

Find 15% of 24.85 Change 15% to a decimal= 0.15 x 24.85 = $3.7275

Put your answer in a sentence: The tip should be $3.73 (is that close to our estimate of $375?)

Now solve using a calculator.

Whiteboard practice.

1. Find the tax on an item that costs $54 if the sales tax rate is 8%.

2. What is the total price including the tax?

3. Find the tax on an item that costs $40 if the tax rate is 9.25%.

4. Find the total price including the tax.

5. ESTIMATE: A 15% tip on a meal of $48.89.

REMEMBER:

To Always Show Your Work

Take out your Learning Targets!

A family purchased a DVD player for $200. The sales tax rate was 7%. What was the total cost of the purchase?

Method 1Add sales tax to the

price:$200 7% = tax

$200 .07 = $14.00 tax

$200 + 14.00 = $214.00

Method 2Multiply the price by 107% since 7% is added to the cost.$200 107% = total cost

$200 1.07 = $214.00

So, the total cost was $214.00.

Sales TaxLT #10

1

0

TipsMrs. Girt earned average tips of 18% while waiting tables at Denny’s. If her sales one night were $730, what did she make in tips?

Tips 18% of 730

0.18 730 = $131.40

3

730 x 0.18

048037041

2

Tips =5

1

LT #11

Mrs. Girt earned $131.40 in tips that night.

TipsThe dinner bill at Olive Garden was $58.57 cents. If your family wanted to leave a 15% tip for the waiter approximately how much should they leave?

.15 58.57Tip =

LT #11

Tip = 15% of $58.57

SO: Use Benchmarks and Short cuts to estimate tip:

Round $58.57 to $60 then take 15% by using 10% + 5% to get the tip.

10% of $60 = $6+ 5% of $60 = $3 15% of $60 = $9 So the tip should be about $9.

Kind of an “ugly” calculation!

Name___________February 12, 2013Period___

Pg. 300 – 301 #2, 3, 6, 7, 9 – 11, 21 - 24Make sure your show all set up for full credit!

You must set them up and can use calc to do calculations.

Does your answer make sense?