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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11 views

What do you think it means when I ask for a 0.5% transaction fee?

What comes to mind when I tell you that im charging a fee of 0.5% when you buy flowers from me? You can either think of it as If I want to purchase 1000 dollars worth of flowers I need to pay 1005. ...
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1answer
11 views

Percentage of a collection doubly grouped

Suppose I have a collection of people. I look at one specific group which contains 8% of total people. I know in that group the average percentage of total sweets each person has is 3%. I want to ...
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47 views

How many users based on one user's ranking [closed]

An individual knows that they are in the top n% of posters on a website for a particular time period. Is there enough information to asses the minimum number of registered users the site must have? ...
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25 views

Percentage of votes received in an election

In an election, $70\%$ of males were registered voters and $40\%$ females were registered voters, all registered males casted their votes. But only $65\%$ registered females casted their votes. If ...
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2answers
37 views

Calculate total number of votes cast given percentage of winners

I know that the top three candidates received 14.14%, 13.13% and 12.12% of a vote. I also know that the total number of votes cannot be more that 300, and the numbers of votes cast and the total must ...
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1answer
34 views

Alligation or mixture [closed]

A vessel is filled with liquid,3 parts of which are water and 5 parts syrup.How much of the mixture must be drawn off and replaced with water so that the mixture may be half water and half syrup? ...
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1answer
23 views

MALIK sold a chair at a loss of 20%.If he had sold it for Rs 50 more he would have gained 5%.Find the cost price of the chair [closed]

MALIK sold a chair at a loss of 20%.If he had sold it for Rs 5o more he would have gained 5% . Find the cost price of chair.
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2answers
32 views

Finding percentage of a dollar amount

I'm working with a website that can be used to pay contractors on my behalf, instead of requiring them to submit to me their W9 for taxes. The website takes $2.75\%$ in processing fees. If I'm ...
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1answer
48 views

Buy Get Offer Calculation?

I have some clarification regarding any equation to do some logic like Buy 2 Get 3 Offer with repeat (means if i buy 4 then 6 to be off) If i add 2 quantities of product to cart then another 3 ...
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2answers
46 views

How do I find what $100\%$ is, if $15\%$ is $250,000$?

I am doing a budget planning and got problem with this question: How do I find what $100\%$ is, if $15\%$ is $250,000$? Is it $$\frac{250,000}{15} \times 100?$$
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1answer
20 views

Spending and left over amount/percentages

Question 1) Cam would like to spend some of his money on friends. Of the 350 dollar budget he was given, he has to spend 75.00 dollars on office supplies, 10.00 dollars per person for an entrance fee ...
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4answers
46 views

How many applicants need to apply in order to meet the hiring target?

Cam needs to hire $30$ new employees. Ten percent $(10\%)$ of applicants do not meet the basic business requirements for the job, $12\%$ of the remaining applicants do not pass the pre-screening ...
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33 views

Percent Problem with different answers

We have 81% of our team here today and we have 16 team members. How many members are missing today? A) 2 B) 3 C) 4 D) 12 E) 13 My answer: I did $(0.81)(16) = 12.96$ Rounding up that would give us E)...
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0answers
18 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 ...
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0answers
19 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? ...
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31 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?
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39 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 ...
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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 $...
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3answers
41 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 ...
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1answer
16 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 ...
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1answer
17 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 ...
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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 ...
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1answer
15 views

How to calculate volume change from price and gross margin?

I have a matrix that looks like this: ...
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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 ...
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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 ...
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2answers
48 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 ...
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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 ...
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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 ...
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1answer
35 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 ...
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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 ...
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2answers
42 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.
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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 - ...
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1answer
19 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 ...
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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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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
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
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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 ...
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3answers
51 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 ...
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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 ...
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1answer
42 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} ...
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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
45 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? ...
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0answers
73 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%. ...
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1answer
31 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 ...
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1answer
31 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- 39.69$...
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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 ...
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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, ...
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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 ...