# 6.2 Solve general applications of percent  (Page 5/7)

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Emma gets paid $\text{3,000}$ per month. She pays $\text{750}$ a month for rent. What percent of her monthly pay goes to rent?

25%

Dimple gets paid $\text{3,200}$ per month. She pays $\text{960}$ a month for rent. What percent of her monthly pay goes to rent?

Find Percent Increase and Percent Decrease

In the following exercises, find the percent increase or percent decrease.

Tamanika got a raise in her hourly pay, from $\text{15.50}$ to $\text{17.55}.$ Find the percent increase.

13.2%

Ayodele got a raise in her hourly pay, from $\text{24.50}$ to $\text{25.48}.$ Find the percent increase.

Annual student fees at the University of California rose from about $\text{4,000}$ in $2000$ to about $\text{9,000}$ in $2014.$ Find the percent increase.

125%

The price of a share of one stock rose from $\text{12.50}$ to $\text{50}.$ Find the percent increase.

According to Time magazine $\left(\text{7/19/2011}\right)$ annual global seafood consumption rose from $22$ pounds per person in $1960$ to $38$ pounds per person today. Find the percent increase. (Round to the nearest tenth of a percent.)

72.7%

In one month, the median home price in the Northeast rose from $\text{225,400}$ to $\text{241,500}.$ Find the percent increase. (Round to the nearest tenth of a percent.)

A grocery store reduced the price of a loaf of bread from $\text{2.80}$ to $\text{2.73}.$ Find the percent decrease.

2.5%

The price of a share of one stock fell from $\text{8.75}$ to $\text{8.54}.$ Find the percent decrease.

Hernando's salary was $\text{49,500}$ last year. This year his salary was cut to $\text{44,055}.$ Find the percent decrease.

11%

From $2000$ to $2010,$ the population of Detroit fell from about $951,000$ to about $714,000.$ Find the percent decrease. (Round to the nearest tenth of a percent.)

In one month, the median home price in the West fell from $\text{203,400}$ to $\text{192,300}.$ Find the percent decrease. (Round to the nearest tenth of a percent.)

5.5%

Sales of video games and consoles fell from $\text{1,150}$ million to $\text{1,030}$ million in one year. Find the percent decrease. (Round to the nearest tenth of a percent.)

## Everyday math

Tipping At the campus coffee cart, a medium coffee costs $\text{1.65}.$ MaryAnne brings $\text{2.00}$ with her when she buys a cup of coffee and leaves the change as a tip. What percent tip does she leave?

21.2%

Late Fees Alison was late paying her credit card bill of $\text{249}.$ She was charged a $\text{5%}$ late fee. What was the amount of the late fee?

## Writing exercises

Without solving the problem $“44$ is $\text{80%}$ of what number”, think about what the solution might be. Should it be a number that is greater than $44$ or less than $44?$ Explain your reasoning.

The original number should be greater than 44.80% is less than 100%, so when 80% is converted to a decimal and multiplied to the base in the percent equation, the resulting amount of 44 is less. 44 is only the larger number in cases where the percent is greater than 100%.

Without solving the problem “What is $\text{20%}$ of $300?”$ think about what the solution might be. Should it be a number that is greater than $300$ or less than $300?$ Explain your reasoning.

After returning from vacation, Alex said he should have packed $\text{50%}$ fewer shorts and $\text{200%}$ more shirts. Explain what Alex meant.

Alex should have packed half as many shorts and twice as many shirts.

Because of road construction in one city, commuters were advised to plan their Monday morning commute to take $\text{150%}$ of their usual commuting time. Explain what this means.

## Self check

After completing the exercises, use this checklist to evaluate your mastery of the objectives of this section.

After reviewing this checklist, what will you do to become confident for all objectives?

what does nano mean?
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Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
it is a goid question and i want to know the answer as well
Maciej
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
what is fullerene does it is used to make bukky balls
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
so some one know about replacing silicon atom with phosphorous in semiconductors device?
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Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
for screen printed electrodes ?
SUYASH
What is lattice structure?
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
what's the easiest and fastest way to the synthesize AgNP?
China
Cied
types of nano material
I start with an easy one. carbon nanotubes woven into a long filament like a string
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many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
what is nano technology
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preparation of nanomaterial
how to synthesize TiO2 nanoparticles by chemical methods
Zubear
what's the program
Jordan
?
Jordan
what chemical
Jordan
how did you get the value of 2000N.What calculations are needed to arrive at it
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Good
Berger describes sociologists as concerned with
Jeannette has $5 and$10 bills in her wallet. The number of fives is three more than six times the number of tens. Let t represent the number of tens. Write an expression for the number of fives.
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How do i figure this problem out.
how do you translate this in Algebraic Expressions
why surface tension is zero at critical temperature
Shanjida
I think if critical temperature denote high temperature then a liquid stats boils that time the water stats to evaporate so some moles of h2o to up and due to high temp the bonding break they have low density so it can be a reason
s.
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?