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.

learn more… | top users | synonyms

-1
votes
0answers
20 views

What is the final percentage paid after melt loss…? [on hold]

Ok so I buy and sell gold and I'm trying to figure out how big of a percent my buyer takes when he pays me. I sent in 3.28 Troy oz. the weight after melt comes down to 3.17 Troy oz. 48.3% of the ...
0
votes
0answers
17 views

Profit Percentage where my expense is Zero

If I charge 200 dollars from person "A" for a service and if I get that service done from person "B" for 100 dollars. Then what is my profit percentage for the following scenarios? Person "A" pays ...
0
votes
0answers
18 views

subtracting percent of a starting number.

Maybe this is simple but i cant seem to figure it out. I now have a value of 6417 That is after a 75% increase. So what was the number before the increase? and what equation was used to solve this? ...
0
votes
0answers
30 views

problem on mixture and alligation - mixing water and milk and finding profit percentage

I solved it and getting answer as 200% My calculations are water: x milk 2x cost price: 2x*7=14x selling price: 3x*7*2=42x profit : 28x percentage profit : 28x/14x * 100 = 200% Am I correct?
0
votes
0answers
33 views

Profit-Loss Problems

A dishonest merchant makes a 10% profit at the time of buying and a 5% loss at the time of selling the goods he/she trades. By doing so if the said merchant made a profit of $900 on a particular ...
0
votes
0answers
38 views

Money over time

If I invest $1000$ dollars, I make $10$% of that on day one. The next day I take the amount I had plus the profit, and invest it making $10$% of that. How can I calculate the amount it will be after $...
-1
votes
3answers
40 views

A question about percentages.

$ 6 \text{ kg} $ if a salt solution contains $ 40\% $ of salt by weight. How many kilogram of salt must be added to obtain a solution containing $ 60\% $ of salt by weight? I have trouble ...
1
vote
1answer
14 views

Optimal Way To Get Unique Results Given Two Options of Selecting

sorry for the vague title. I've got this problem I've been working on solving. It is as follows: Imagine there are a an infinite amount of gumballs with 12 different colors with an equal chance of ...
0
votes
1answer
16 views

How to calculate top percentage of a dataset?

I'm no math expert: on the contrary. I have a huge dataset -- think 100.000 records. Each contains a value between 235 and 2689. Let's say I have a score of 1860. How do I find out how I rank against ...
-1
votes
1answer
35 views

How to find a pattern

I have a list of objects. Each object has $3$ values that will have a value from $0$ to $100$. I want to know how iI be able to find the pattern that is most common in that list. Object 1: 1-2-3 ...
0
votes
1answer
14 views

How to calculate volume change from price and gross margin?

I have a matrix that looks like this: ...
0
votes
0answers
20 views

Ratio reconstruction

I have the following situation: Given a set of monthly values for two categories the following formula is used to get the ratio of the values for a given period of time: $ratio = \frac{\sum_{i=1}^n ...
0
votes
0answers
10 views

Finding a percentage using standard deviation and mean

there is a soft drink company who fllers 1 liter bottle, or 1000 ml. The machine doesn't always put the perfect amount in the bottles. With a mean of 1000 ml, and a SD of 5 ml. the Machine will put ...
0
votes
2answers
40 views

Why is sum of calculation based on individual percentages different than total percentage?

Cost of goods for an entire product line were estimated using a percentage of total revenue. For example, Product line XYZ was projected to have a revenue of \$1,305. The product line's total cost of ...
-1
votes
1answer
21 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
30 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
33 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
votes
2answers
90 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 ...
-4
votes
2answers
41 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
votes
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
votes
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
votes
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
0
votes
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 ...
0
votes
0answers
15 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
3answers
36 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
48 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
vote
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
votes
1answer
41 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
votes
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 ...
0
votes
0answers
34 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
votes
0answers
50 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 ...
0
votes
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
votes
1answer
29 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
votes
1answer
28 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 ...
1
vote
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- 39.69$...
0
votes
0answers
9 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 ...
-1
votes
3answers
21 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
votes
0answers
16 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 ...
0
votes
1answer
15 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 ...
1
vote
2answers
25 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 $25\%$; ...
0
votes
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 ...
1
vote
1answer
29 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 $f(a)$ ...
1
vote
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 outcome"...
-1
votes
1answer
24 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
votes
1answer
12 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 ...
1
vote
0answers
34 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 $100$. ...
0
votes
0answers
22 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
votes
1answer
18 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 ...
1
vote
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: ...
0
votes
1answer
22 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, ...