1. Bell Work From 5 to 7 2 0.4 = 5 40% increase
A percent of change tells how much a quantity has increased or decreased relative to the original amount.
Movie tickets used to cost $5, now cost $7.
Find the percent of change.
From 5 to 7
Change decimal to a % 2
0.4 = 5
40% increase

2. Markups
Tax and
Tip
TAKE OUT A CALCULATOR

3. Markup vs. Discount Markup
A retail store buys items at wholesale prices. To cover expenses and make a profit, they sell items at higher retail prices. The extra amount is called the markup.
Discount
When an item is on sale, the store is selling the item for less, so this is called discount.

4. Markup
$25.99 sweater marked up 20%
$31.19

5. Sales Tax
A family purchased a DVD player for $200. The sales tax rate was 7%. What was the total cost of the purchase?
Method 2
Multiply the price by 107% since 7% is added to the cost.
$200 x 107% = total cost
$200 x 1.07 = $214.00
Method 1
Add sales tax to the price:
$200 x 7% = tax
$200 x .07 = $14.00 tax
$ = $214.00
So, the total cost was $

6. Total Purchase Price $100 + $7.00 = $107
Calculating Sales Tax
Sales tax is calculated by multiplying the
retail price of an item by the sales tax rate
for an area. METHOD 1
Example: Shoes $100
Tax Rate 7%
Sales Tax $100 x 0.07 = $7.00
Total Purchase Price $100 + $7.00 = $107

7. Both methods give you the same answer!
Calculating Sales Tax
Sales tax is calculated by multiplying the
retail price of an item by the sales tax rate
for an area.
METHOD 2
Example: Shoes $100
Tax Rate 7%
Add 7% to 100% since that includes the total price and the tax. Find 107% of $100.
= $107
Find total $100 x 107%
Multiply $100 x 1.07
Both methods give you the same answer!

8. Add the sales tax to the price of the car.
Calculating Sales Tax
The sales tax in Ohio is 8.5%. Your family is
buying a new car for $20,000. What will be
the total cost of the car? METHOD 1
Example: Car $20,000
Tax Rate 8.5%
Sales Tax $20,000 x = $1,700
Add the sales tax to the price of the car.
Total Purchase Price $20,000 + $1700
= $21,700

9. Multiply $20,000 x 1.085 Calculating Sales Tax = $21,700
The sales tax in Ohio is 8.5%. Your family is
buying a new car for $20,000. What will be
the total cost of the car?
METHOD 2
Add 8.5% to 100%
Add 8.5% to 100% since that includes the total price and the car and tax. Find 108.5% of $20,000.
Multiply $20,000 x 1.085
= $21,700
Both methods give you the same answer!

10. = $3.7275 Put your answer in a sentence: Find 15% of 24.85
Leaving a Tip
You and a friend go to lunch. The check comes to $ 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 that should be left is $3.73

11. Markup, Tax and Tip worksheet
Practice:
Markup, Tax and Tip worksheet