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Slide 1
PERCENT OF A # UNIT6
Slide 2
WELCOME BACK! Whatd you do over Break?? (on a piece of
paper)
Slide 3
EXPECTATIONS Behavior Attendance Homework & Extra Credit
financialalgebra.weebly.com Grading
Slide 4
PERCENTAGES Cent is Latin for one hundred. Therefore, a
percentage is a ratio where the second number is 100. Percentages
will be everywhere for the rest of your lives.
Slide 5
OF AND PER (hopefully for the last time) In mathematics. Of
means ______ Per means _______
Slide 6
TO CALCULATE % OF A NUMBER 1. Convert % to a decimal by
dividing by 100. 2. Multiply by the number.
Slide 7
CALCULATING PERCENT OF A NUMBER 1. Find 15% of 100. 2. 15% of
25. 3. 13.4% of 89.23. 4. 4% of 27.
Slide 8
APPLYING YOUR KNOWLEDGE You work as a waitress. Because youre a
math nerd and love money, youve been keeping data on your customers
for the past month. Youve found that on the average Tuesday night,
you wait on 8 tables. The average bill per table is $53.50. Your
customers always leave you a tip; the lowest tip you expect is 15%
of the bill, and the highest tip you expect is 20% of the bill.
What is the range you should expect in your total tips for next
Tuesday night?
Slide 9
Jamie accepted a job through an employment agency. The job pays
$1,500 a week. The agency charges 30% of her first 4 weeks pay. How
much does Cherie owe the employment agency?
Slide 10
TRUE STORY Charif Souki is the CEO of Cheniere Energy. This
happy guy made $141,949,280 in 2013. His total earnings for 2013
accounted for 53.1% of Cheniere Energys total revenue! (Every other
employee and cost of C.E. was left with 46.9% of the total
revenue). *as a side note, this was up 147% from his previous years
paycheck How can we calculate Cherniere Energys total revenue from
2013?
Slide 11
SOMEWHAT LESS CRAZY 1. Stephen Kaufer is the CEO of
TripAdvisor. He was paid $39,014,227 in 2013, which was 4.1% of
TripAdvisors total Revenue. What was the total Revenue in dollars
for TripAdvisor in 2013? 2. Googles Total Revenue in 2013 was 15.7
billion dollars. Larry Page is Googles CEO. According to Erik
Sherman, most CEOs are paid between 0.1% and 0.4% of a companys
total revenue. If that is how Google pays Larry Page, calculate his
hypothetical salary range.
Slide 12
BELL WORK Take a whiteboard and marker from my desk. 1. How
much does a T.V. cost if its 20% off the original price of $1,700?
2. 15% of a number is 1,353. What is the original number?
Slide 13
Sam pays $50 semimonthly for health insurance which is 15% of
the total cost. His employer pays the rest. Whats the total cost of
Sams health insurance for the year?
Slide 14
You paid 5% of your total income to taxes last year. In
dollars, this was $5,000. How much money did you make last
year?
Slide 15
WORD PROBLEMS 1. Read the whole problem. 2. Label what you
know. 3. Label what you want to solve for. 4. Solve
Slide 16
EXAMPLE I made $5,000 last year playing the violin in weddings.
Im paid $250 for each wedding. How many weddings did I play at last
year?
Slide 17
Aragorn makes baskets. For each basket he makes, Aragorn earns
$450. Last week Aragorn earned $3,150. How many baskets did Aragorn
make last week? Aragorn wants to make $40,000 next year selling his
baskets. If he can make 500 basket each year, how much should he
charge for each basket?
Slide 18
A WEE MORE MORE COMPLEX Diana works at a shoe store where she
is paid by the hour. If she works over 40 hours/week, she gets paid
time and a half. If Diana makes $9.80/hour and she worked 45 hours
last week, how much in total did she make?
Slide 19
Fan works at a coffee shop and is paid by the hour plus time
and a half for hours over 40. Last week he worked 4 hours overtime
and his gross (total) pay was $532.34. What is his hourly
wage?
Slide 20
Sandro works 40 hours a week at a nursing home and gets paid
double for any overtime he puts in. Last week he made$2,500 and
worked 10 hours of overtime. How much is Sandro paid per hour?
Slide 21
Rosie is paid $5 per bear for the first 100 teddy bears she
makes. She earns $8 for each bear over 100. This week she assembled
170 bears. How much did she earn?
Slide 22
EXIT TICKET 1. Mrs. Brown has been working in a factory for 28
years. She is preparing to retire. Her pension is calculated on the
average of her last 3 years salaries where she earned $38,592,
$37,590, and $37,010. Her employer will give her 1.8% of that
average for each year she worked. Calculate her pension. 2. In
2008, Anna paid $3,875 in Social Security tax. If the Social
Security tax rate was 6.2% to the maximum income of $94,200 that
year, what was Annas taxable income?