POD 10What is 25% of

248?

x = .25 × 248

basicadvanced

x = 62

Lego Marvel Super Heroes was originally priced at $60. It now sells for $20. What is the percent of decrease in it’s price?60 − 20 = 40

4060

The price decreased by 66.6%

40 ÷ 60 = 0.666

POD 11What percent of

348 is 529?

n × 348 = 529

basicadvanced

n = 1.52

Halo: The Master Chief Collection is originally priced at $60. It is on sale for 15% off. What is the selling price?

s = % × original price

The selling price is $51

S = .85 × 60

152%

POD 12Find the interest

I= p r t

basicadvanced

I = 22,000 × .0345 × 2

If Cole invests $8,000 in an account and earns $957 in 3 years, what is the interest rate?

I = p r t957 = 8,000 × r × 3

I = $1518

$22,000 loan, 3.45% interest rate, 2 years

0.039875 = r

÷3 ÷3

319 = 8,000 × r ÷8000 ÷8000

3.9%

Commissions and FeesSome jobs pay you a commission, a percent of the amount of your sales. To find a commission, use:

commission = commission rate × sales

Total earnings = salary + commission

Example 1: I do

A sales agent earns a weekly salary of $650, plus a commission of 4% on all sales. His sales this week are $1,250. How much does he earn?

c = .04 × $1250

t = $650 + $50

The total earnings are $700

commission = commission rate × sales

c = 50

total earnings = salary + commission

Almost all states charge fees for various services. Some fees are flat rates, such as paying $15 for a fishing license. But other fees are percentages of some value.

Example 2: I do

In one state the fee to register a medium weight truck is 1.5% of its assessed value. What is the fee to register a truck with an assessed value of $14,500?

f = .015 × $14,500

The fee is $217.50

fee = percent × whole

f = $217.5

Whiteboard time

Find the commission on a $3,200 sale with a rate of 6%.

c = .06 × $3,200c = $192

commission = commission rate × sales

The commission is $192

Whiteboard time

Suppose you earn a weekly salary of $800 plus a commission of 3.5% on all sales. Find your earnings for a week with total sales of $1,400.

c = .035 × $1400

t = $800 + $49

The total earnings are $849

commission = commission rate × sales

c = 49

total earnings = salary + commission

Whiteboard time

All states charge a fee for using cell phones. In one state, the fee is 1.14% of the bill. What is the monthly fee for a $39.00 bill?

f = .4446

f = .0114 × $39

fee = percent × whole

The fee is $0.44