1. % ∙ $ = commission/sales tax/profit
6.6 Commission, Sales Tax, and Profit p298- Warm Up
1. 20% of 60 is Write 2.5 × 104 in standard form.
3. Complete the table to show how the number of stencils, s, depends on the number of desks, d. Function: s = 5d + 15 d s 1 2 3 30 4
* NS1.7 Solve problems that involve discounts, markups, commissions, & profit & compute simple & compound interest.
LO: I will use strategies, concepts, & skills to evaluate commission, sales tax, percent of earnings, profit, and total sales.
% ∙ $ = commission/sales tax/profit

2. Finding Profit and Total Sales
1. A furniture store earns 25% profit on all sales. If total sales are $3500, what is the profit?
Think: What is 25% of 3500? x
is/part
100
of/whole
Cross products, divide to solve.
Set up an proportion.
The profit is $______.
Error analysis:
x  3500 = 100  25
Correct cross products:

3. Using Proportions to Find the Percent of Earnings
2. Anna earns $1500 monthly. Of that, $ is withheld for Social Security and Medicare. What percent of Anna’s earnings are withheld for Social Security and Medicare?
Think: What percent of $1500 is $125.00? x
is/part
100
of/whole
Set up a proportion.
Cross products, divide to solve.
________% of Anna’s earnings is withheld for Social Security and Medicare.

4. ___%  $_______ = c 0.__  _______= c _____ = c
A commission is a $$ paid to a person who makes a sale. Usually it’s a percent = commission rate.
3. A real-estate agent is paid a monthly salary of $800 plus commission. Last month he sold one condominium for $85,000, earning a 4% commission on the sale. How much was his commission? What was his total pay last month?
1st, Find his commission.
commission rate (%)  ($) sales = commission
___%  $_______ = c
0.__  _______= c
Change the percent to a decimal.
_____ = c
He earned a commission of $________ on the sale.
2nd Find his total pay for last month.
$____ + $_____ = $_____
His total pay for last month was $_________.

5. Method 1: Multiply, then subtract.
4. Elisa bought a television originally priced at $450 that was on sale for 25% off. What was the discounted (final) price?
Method 1: Multiply, then subtract.
(450)(0.___) = ___
Find 25% of $450. This is the amount of discount.
450 – ___ = ___
Subtract $90 from $450.
OR Method 2: Subtract, then multiply.
100% – ___% = ___%
Find the percent Sarah pays.
(450)(0.___) = ___
Find 75% of 450.
The discounted (final) price was $____.
5. A computer game originally sold for $40 but is now on sale for 30% off. What is the sale price of the computer game?

6. 6. Mr. Olsen has a computer business in which he sells everything 40% above the wholesale price. If he purchased a printer for $85 wholesale, what will be the retail price?
Method 1: Multiply, then add.
(85)(0.___) = ___
Find 40% of $85. This is the amount of markup.
85 + ___ = ___
Add $34 to $85.
Method 2: Add, then multiply.
100% + ___% = ___%
Find the total percent of the selling price.
(85)(____) = ____
Find 140% of 85.
The retail price is $____.

7. Multiplying by Percents to Find Sales Tax Amounts
7. If the sales tax rate is 6.75%, how much tax would Adrian pay if he bought two CDs at $14.99 each and one DVD for $13.99?
Total price
CD: 2 at $ $__.__
DVD: 1 at $ $__.__
Write the tax rate as a decimal and multiply by the total price.
0.____  ______ =________
Adrian would pay $_____ in sales tax.
8. A community is considering increasing the sales tax rate 0.5% to fund a new sports arena. If the tax rate is raised, how much more will you pay in sales tax on $500?

8. 9. Julie has been offered two jobs. The first pays $400 per week
9. Julie has been offered two jobs. The first pays $400 per week. The second job pays $175 per week plus 15% commission on her sales. How much will she have to sell in order for the second job to pay as much as the first?
10. Kellen’s bill at a restaurant before tax and tip is $ If tax is 5.25% and he wants to leave 15% of the bill including the tax for a tip, how much will he spend in total?
6.6 RM & SRe p301