1. Write an equation and solve. Round to hundredths as needed.
Markup and Discount
PRE-ALGEBRA LESSON 6-9
(For help, go to Lesson 6-7.)
Write an equation and solve. Round to hundredths as needed.
1. What is 75% of $82?
2. What is 42% of $170?
3. What is 5.5% of $24?
4. What is 80% of $15.99?
Check Skills You’ll Need
6-9

2. 1. What is 75% of $82? 2. What is 42% of $170?
Markup and Discount
PRE-ALGEBRA LESSON 6-9
Solutions
1. What is 75% of $82? 2. What is 42% of $170?
n = 0.75 • 82 n = 0.42 • 170
n = n = 71.4
75% of $82 is $ % of $170 is $71.40.
3. What is 5.5% of $24? 4. What is 80% of $15.99?
n = • 24 n = 0.80 • 15.99
n = n = 12.79
5.5% of $24 is $ % of $15.99 is $12.79.
6-9

3. _________ is the amount of increase in price.
Markup and Discount
PRE-ALGEBRA LESSON 6-9
Vocabulary
_________ is the amount of increase in price.
Percent of Increase is _______________________
_________________________________________
_____________ is the amount of price decrease.
Percent of discount is ________________________
6-9

4. markup = percent of markup • store’s cost
Markup and Discount
PRE-ALGEBRA LESSON 6-9
A grocery store has a 20% markup on a can of soup. The can of soup costs the store $1.25. Find the markup.
markup = percent of markup • store’s cost
= 0.2 • 1.25  
= 0.25        Simplify.
The markup is $.25.
Quick Check
6-9

5. 0.45 • 4.60 = 2.07 Multiply to find the markup.
Markup and Discount
PRE-ALGEBRA LESSON 6-9
A bookstore pays $4.60 for a novel. The percent of markup is 45%. Find the novel’s selling price.
0.45 • 4.60 = 2.07 Multiply to find the markup.
= 6.53   Store’s cost + markup = selling price.
The selling price is $6.67.
Quick Check
6-9

6. discount = percent of discount • regular price
Markup and Discount
PRE-ALGEBRA LESSON 6-9
A camera that regularly sells for $210 is on sale for 30% off. Find the discount.
discount = percent of discount • regular price
= 0.30 • 210
= 63
The discount is $63.
Quick Check
6-9

7. Markup and Discount Solve.
PRE-ALGEBRA LESSON 6-9
Solve.
1. The school store has a 65% markup on each stapler. Each stapler costs the store $2.10. Find the markup.
2. A clothes store pays $40 for a skirt. The percent of markup is 25%. Find the skirt’s selling price.
3. A pair of shoes that regularly sells for $94.99 is on sale for 30% off. What is the sale price?
$1.37
$50
$66.49
6-9