A percentage is a number or ratio expressed as a fraction of $100$. It is often denoted using the percent sign, "$\%$", or the abbreviation "$\mathrm{pct}$." -Wikipedia. Percentages are used when describing portions or proportional changes.

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16 views

Average time to complete [on hold]

How do I calculate the average length of time from intitial intake to scheduled assessment as a whole number and percent?
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1answer
20 views

How to find percentage change between original and final BPM

I am working on a random beat generator and one of the things it does is randomly select the BPM (beats per minute) from a database in between 50 and 200 BPM. The starting BPM of the files will ...
1
vote
2answers
26 views

Is 32x equivalent to 320%?

Ok, I know that might be a silly question, even completely dumb. I'm not good at maths and this question came to my mind : I use 2 pixel softwares, in the first you can choose the export quality by ...
1
vote
2answers
30 views

How do we convert annual growth rate to daily growth rate?

Let's say we have an annual growth rate of $2 \%$, then $p=p_0(1.02)^Y$ where $Y$ is time in years. Would it be safe to say $p=p_0(1.02)^{D/365}$ where $D$ is the time in days (assuming a year is ...
0
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2answers
89 views

Where would this be on a range? ($0$ to $100\%$) Algebra [closed]

Ok, we have two expressions: $30x + 1500$ $19x + 9000$ The first thing to note is, the first expression is $100\%$ and the second expression is $0\%$. The second thing is to note in all of ...
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2answers
40 views

What will be the monthly income after 2 months? [closed]

Jim's current income is $12000. If his monthly income increased by 10%. Find the total income after 2 months.
0
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1answer
27 views

Total Percentage Change - Why does this work?

Algebraically this works, but I'm looking to understand (1) why it works and (2) if there is a simpler formula. Problem: I want to get total % change over time. Facts: Example Data - Jan 2013 - ...
0
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1answer
17 views

finding out an average percentage

If 70% of the adult males of a community have brown eyes 75% have dark hair 85% are over 5 feet 8 inches tall and 90 % weigh over 140 kgs what is the least percent of people having all four ...
0
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0answers
12 views

Percentage question

Two numbers are in the ratio of 2:3. 20% of the smaller number added to 20 becomes equal to the sum of 10% of the larger number and 25. The small amount is: A.150. B.100. C.160. D.250
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0answers
24 views

Is there a way to know when a minority of the data is telling the truth?

I am working with temperature data obtained from a network, and i need to identify when temperature sensings are legitimate(Haven't been modified by someone). To find this out, i must compare new ...
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0answers
33 views

2%solution + 25% solution = 9L of 3%solution [duplicate]

A pharmacist needs to combine a 2% solution of a medication with a 25% solution (of the SAME medication) to make 9 litres of a 3% solution. Use simultaneous linear equations to determine how many ...
0
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0answers
14 views

absolute percent difference?

I have two values - 5 and 20 and have calculated the percentage difference between them to be -120 (20 is the reference number against which 5 has been measured). If I want to find the absolute ...
0
votes
1answer
19 views

Percentages question

John brought a flat at $\\540,000$ and he sold it to Tanny at a loss. Tanny then sold it at a profit to Kimberly at $\\535,000$ . If the loss percentage on the cost of John is equal to the percentage ...
3
votes
3answers
46 views

Percentages, discrete or continuous?

I have this question I can't figure out. A basketball player starts a game. During the first period of the game, the success rate of his shots is less than $80$%. At the end of the game, his success ...
1
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0answers
17 views

Confused by simple risk problem

I am having troubles understanding this basic problem and would like to see if anyone could help me out. I have two boxes: one red, one blue. Depending on what box I pick, I have the potential to ...
0
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1answer
37 views

How to calculate a weighted final grade that is not out of $100\%$

I took a professor that graded his class based on weights and not points but the class weight percentages only added up to $70\%$ not $100\%$. Below is my grades: Quiz $10\%$ weight $\dfrac{374}{384} ...
0
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0answers
9 views

Contribution percentage of terms in a multiplication

I have the following measured in two different moments (i - for initial and f - for final) $ A = B \times C $ For any variable X, I have: $\Delta X = X_{f}/X_{i}-1 $ Now what I would like to do is ...
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0answers
15 views

Equation for percentage increase needed to equal overall percentage of classes

I have two classes: a and b. For arguments sake, the overall number of a's and b's is 100. So there are 10 A's, and 90 B's. What equation can be used, to find out the percentage increase needed for ...
0
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0answers
24 views

Adding up percentage point contributions to a percentage change

In the constructed example below how would I work out the percentage point (ppt) contributions of factors A and B to growth of the main series between periods 1 and 5? ...
0
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0answers
36 views

How to calculate a group percentage?

In a classroom, there are 8 desks equally arranged in two columns (i.e. each column has four desks). Each desk can accommodate 2 people and there are eight boys and eight girls in total. When two ...
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1answer
15 views

Taxes calculations on goods: there is something I'm missing

Lets say I have a good that costs 1000 Eur including taxes and that the applied tax rate is 22%. ...
0
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1answer
27 views

Constant difference between two percentage numbers (nonlinear)

I'm trying to figure out the correct way of detecting the difference of values based on two percentages, because my terminology is poor here is an example: The difference between two values where ...
0
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1answer
26 views

Calculating percentage based on an average percentage

This is a typical question a student at any Business School have to deal with during the test. Could you please give me insight on how to solve it. What area of study should I invest in? A student ...
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1answer
22 views

If this pattern continues what will the balance be in January 2017?

If this pattern continues what will the balance be in January 2017? I noticed every month there's a higher percentage increase but don't know how to calculate. Thank you! january- 25.29$ Feb- ...
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0answers
8 views

Average discount give for product line

I have been out of school for entirely too long to remember how to build this equation. I am trying to calculate the average discount given for our entire product line, that is sold over 4 distinct ...
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3answers
20 views

Find source from percentage number

Yeah, I might look stupid with this question but Math classes are so long ago for me :). I need to find the exact number that makes 18.20, ...
0
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0answers
14 views

Is it possible to transform different interest rates (applied over different times) into one interest rate?

I have a fixed income asset that has the following payment schedule. Is it possible to transform the multiple interest rates being applied to different periods into one interest rate and one period? I ...
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1answer
13 views

How to calculate percentage based alignment

Ok, first a little explanation of concept and rules: Let's say we have a container and an image. Now if we define a percentage, the percentage of the image is aligned to the percentage of the ...
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2answers
24 views

Find price without VAT from price with VAT and VAT rate

I need to calculate what number my number was before it had added percentages. I have a price including VAT, and I need to find out what to price was before VAT. In Denmark our VAT Rate is $25\%$; ...
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0answers
13 views

How to Calculate Item Discount for Packet containing 3 sheet

I have some products (packets) that contain (Sheets) for example: Product A (Unit: Packet, Packet = 5 Sheet), when I sell one packet and 2 sheet of this product, then: Total = Packet Price + (Number ...
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1answer
26 views

Finding percentage when infinity is involved

Is it possible to convert a function of the form $f(x)=ax/(a-x)$ to a form where you can find $f(x)/f(a)$? I'd like to find the percentage of $f(a)$ for $f(x)$ but this seems impossible while $f(a)$ ...
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2answers
21 views

What *is* percentage difference?

I'm trying to calculate the percentage difference $\Bbb{P}$ between two numbers, $x$ and $y$. I'm not given much context about how these numbers are different (for example, if one is "expected ...
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1answer
23 views

How to calculate the percentage between two numbers? [closed]

Assiming the firt is always the bigger one and the second is the smallest how to calculate the percentage between them, ex: 100, 25 = 25% thanks
0
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1answer
11 views

Percent comparison

I have a frequency list of words. This list was generated using 1,000,000 words. I want to compare how much more word 1 occurs compared to word 2. For example, The word "he" shows up 20000 times The ...
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0answers
33 views

How to find $x$ out $x\%100+x\%(x\%100)+x\%(x\%(x\%100))…=a$?

$$x\%100+x\%(x\%100)+x\%(x\%(x\%100))...=a$$ It repeats $b$ times. $a$ is known. $b$ is known. How to find $x$? I am not sure I formatted right, so I note that $x\%100$ means $x$ percent of $100$. ...
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0answers
21 views

Need help with weighted grades calculation

I can't quite see how to solve this, so help will be appreciated. I want to see if I can ever recover from this situation and what my final projected grade could be based on this. I list my grade in ...
0
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1answer
17 views

Probability of that an action unit backs to it's original price in 6 days

Each day the price of a particular stock rises or falls, the probability of the price up is 3/4 and 1/4 the probability that the price down , What is the probability that in six days the action back ...
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0answers
20 views

Sequence of percentages with corresponding video retention periods

I couldn't think of a better title so I do apologize if it is misleading, but my question is this: ...
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1answer
21 views

Questions based on ratio and percentage

Out of $5$ questions given in a question paper, $1/20$th of examinees answered all questions and $1/20$th answered none. $1/4$th and $1/5$th of the remaining examinees answered $4$ and $1$ questions, ...
0
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0answers
37 views

Minimum Percentage Error without any approximate values

Kelly knows she will take between $10$ and $12$ minutes (inclusive) to get ready for school. What is the least the percent error could be? Kate took a test and she got a grade between $80\%$ and ...
0
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1answer
14 views

Algorith/Method to determine if a percentage will be greater than fixed amount without knowing the final number.

If you are applying a discount to a price and you have two possible choices on the discount to apply, a percentage or a fixed amount, e.g. I could remove a fixed amount of 5 or I can remove a 20% of ...
0
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2answers
24 views

Increase in price by a percentage for values greater than $100%$

The price of a TV in 1970 increased by $300$% in 1980. The price of the 1980 model TV increased by $200$% in 1990. By what percentage did the price increase from 1970 to 1990? Can someone please ...
0
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1answer
44 views

Multiple percent calculations

I would like to ask trivial question about calculating percents. Problem appeared during accounting calculations. I've got $100$ Euro of Tax. There was a $10\%$ ratio which I was allowed to deduct ...
0
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2answers
26 views

How much water must be added to $10\%$ of $350\text{mL}$ alcohol to dilute it to $5\%$

You have $350$ml of cider, with a $10\%$ alcohol content. If you want to dilute the drink to end up with a $5\%$ alcohol content, how much water would you need to add?
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1answer
16 views

Lottery Payout Fun

I'm working on a lottery pay out mechanic for a game, and I'm not quite sure how to address multiple winners. The plan is that the players will always split the lottery earnings, but there are ...
0
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1answer
78 views

Find the percentage of occupied space of each object in a bag, where each object has a different value (unknown value, read more)

I don't know if there is an answer for this question, but I developed a smartphone application and my competitor do something that for me is not possibile.. so here's the question: I have a bag and ...
0
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1answer
17 views

Percentage and Mean

Okay, I wanna Calculate my grade in a class.Formative is worth 35% of the grade, Summative is 55% and Final exam is 10%. For formative, I have 86.3%. For summative, I have 68%. The final exam has not ...
0
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1answer
41 views

How do I convert a percentage from a 1%-100% scale to a different scale?

So if I have 9%, and this 9% fits in where 0 is the lowest and 100% is the highest, what would that 9% be if 25% is the lowest and 75% is the highest? What would the formula be to convert a ...
2
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2answers
57 views

Why does the difference between 150% and 120% equal 25%?

I am working through a math book and the question states: The cost of living in a city increased by 20% in the 10 years from 1980 to 1990 and by 50% from 1980 to 2000. What was the percent increase ...
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1answer
39 views

Relation between some numbers and some percentage. What does represent $25$ in percent value?

I have a question about percentage. If $0$ represents $10\%$ $15$ represents $100\%$ $30$ represents $200\%$ What does $25$ represent in percent value? I have obtained that $25$ represents ...