Question

Giving Lessons: Taking Percentages

Answer 1

If you don’t already know… for the past few days I have decided to start Giving Lessons. If you want to see the rest of them just go on my profile, click on my questions, and click on the ones that start with: “Giving Lessons”. I feel that this is definitely helping some of you, so I decided that this is a great way to help you guys out! If you already know this, then tag someone who doesn’t, but if you don’t already know this, then hopefully this will help you out!

Let’s Get Started! :)

The first sample problem we will be working with today is
\(\color{red}{\text{What is 37% of 600?}}\)

Now to solve this, you need to first turn the percentage in the problem, into a decimal.

You can turn a percent into a decimal by dividing the percentage value by 100. Another way to do it is to simply move the decimal point 2 places to the left.

When you have done this for \(\color{blue}{\text{37%}}\), you should get \(\color{blue}{\text{0.37}}\).

Now all you do is multiply \(\color{blue}{\text{600*0.37}}\). When you do this you should get \(\color{blue}{\text{222}}\).

DONE! GREAT JOB! :)

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Still Confused? Don’t worry! We will be doing another sample problem!

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Okay, our next sample problem is:
\(\color{red}{\text{What is 13% of 100?}}\)

This one is a lot easier, because you are trying to find a percent out of 100. If you are trying to find a percent out of 100 all you do is take the percent, remove the sign, and you have your answer! So this one would be \(\color{blue}{\text{13}}\)

DONE! GREAT JOB! :)

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Still Confused? Don’t worry! We will be doing another sample problem!

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Okay, our next sample problem is:

\(\color{red}{\text{What is 58% of 750?}}\)

Now, lets first turn the percentage in the problem, into a decimal. When we do this we would get \(\color{blue}{\text{.58}}\).

Now just multiply \(\color{blue}{\text{.58*750}}\). When you do this you should get \(\color{blue}{\text{435}}\)

DONE! GREAT JOB! :)

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Still Confused? Don’t worry! We will be doing another sample problem!

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Okay, our last sample problem is:

\(\color{red}{\text{What is 17% of 600?}}\)

Let’s turn the percentage in the problem into a decimal. When you do this you should get \(\color{blue}{\text{.17}}\).

Now just multiply \(\color{blue}{\text{.17*600}}\)

That is it! It is as simply as that! :)

Great Job! :)

Still Confused? Don’t Worry! If you have any questions just comment them down below! I will try my best to answer them as soon as possible!

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I hope this helped you in some way! Once again, If you already knew this, then tag someone who doesn’t. But if you didn’t and this helped you… then I am very glad that I helped you out!

Alright, bye now! :)

Answer 2

I have something to ask you

Answer 3

Do you like it? How can I improve? Should I add something, delete something, etc. Sorry you guys are the experts so I just tagged you guys. :)

@DanJS @TheSmartOne @agent0smith @tkhunny

Answer 4

How do you find the depreciating percentage instead of the real percentage

Answer 5

that is what I think you should add

Answer 6

it would be nice since I could learn it

Answer 7

and have really wanted to be able to get into an advanced math class

Answer 8

so I could learn more in math and maybe one day do what your doing (giving lessons). I really like the idea

Answer 9

From SmallBusiness.Chron >> "To calculate double-declining-balance depreciation, assume the estimated life of an asset is five years and the cost is $48,000. Divide 100 percent by 5 to calculate the depreciation rate -- 20 percent, and then double the depreciation to 40 percent."

@Liam2004

Answer 10

I got it now. Thank you so much

Answer 11

No problem! :)

@Liam2004

Answer 12

you just find the years and then divide 100 by the years then multiplying it by 2. Which gives you the percentage that it is depreciating by. I think I might do something like you are doing since maybe we can help many people learn stuff. @AihberKhan

Answer 13

Haha yeah! :)

@Liam2004

Answer 14

In general, problems that ask questions like:

45% of x is 63. What is x?

40% of 120 is n. What is n?

What the student should know is that:

'of' in mathematics means multiplication.
'is' in mathemacs means equal.

So 45% of x is 63 can be translated to:

45% * x = 63

And we can then convert the percentage to a fraction.

45/100 * x = 63

(9 * 5)/(20 * 5) * x = 63

(9/20) * x = 63

x = 63 * (20/9)

x = 7 * 20

x = 140

It's best to learn how to deal with fractions and not get scared with them. :P

As for the other problem I wrote above:

40% of 120 is n. What is n?

Using what I said earlier about 'of' and 'is', let's translate it:

40/100 * 120 = n

(4 * 10)/(10 * 10) * (12 * 10) = n

(4/10) * (12*10) = n

4 * 12 = n

n = 48.

:)

Answer 15

Wow great explanation! Thank you for that! :)

@TheSmartOne

Answer 16

I'm glad that it could enhance your tutorial/lesson. :)

Answer 17

looks good,

people always have the most prob just translating words to a equation, and yeah fractions are exact values

Answer 18

Yeah they do! I should make a lesson on that haha. I realized that they have trouble on that as well!! :)

@DanJS

Answer 19

like when asked "what percent" of something is something else

i usually use

\[\frac{ x }{ 100 }\], easier to solve

Answer 20

what percent --- x/100

Answer 21

Ah yes! That is much easier! :)

Answer 22

great work :)

Answer 23

Thank you! :)

@xapproachesinfinity

Answer 24

i was thinking about saving the generic common question answers somewhere,
like everything with lines and slopes would be first, so i can just copy paste and move on

Answer 25

Oh wow that is a very good idea! Yes that is what I do sometimes... for example I sometimes just copy and paste equations to factoring problems like the quadratic formula and simply move on :)

Answer 26

I am definitely going to try that! More people should try that strategy out. It is much easier and a much faster process!

@DanJS

Answer 27

i'm sure people do that, i ask sometimes when a huge essay answer is entered in record time

Answer 28

Yes that happens a lot! However, some people don't do the right think and do what you are thinking... sometimes they simply copy and paste the answer of that question from another source.... it honestly is disappointing when you work so hard to paste an answer and they simply copy and paste... and then they get the medal.

@DanJS

Answer 29

i do not under stand

Answer 30

What don't you understand? :)

@fox11897

Answer 31

your last question

Answer 32

Oh it is simple! All you do is \(.17*600\). Unfortunately, if you do not know how to multiply these then you need to go to another lesson. Because, you need to have that skill before you can learn this subject :)

@fox11897

Answer 33

ok i understand know thank you

Answer 34

No problem! Thanks for asking! :)

@fox11897

Answer 35

Can you tell me what you think? :)

@phi @ganeshie8

Answer 36

Good write up. *Two thumbs up*