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.
Questions tagged [percentages]
1440 questions
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3 answers
How do I calculate per year profit percentage if the profit percentage for 2 years is given?
I am calculating the profit percentage per year. My investment for 2 years is \$2700 and my returns after two years is \$2815. So, the profit is \$115. The profit percentage is 4.25% for 1 year 10 months. How can I calculate yearly profit?
dexterous
- 621
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1 answer
Question on percentages(Pollution in the atmosphere)
What I tried:
$$20*(1-\frac{80}{100})^n=0.01$$
$$=>(\frac{2}{10})^n=\frac{1}{2000}$$
But by this n is not having any integer value!
Soumee
- 1,087
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3 answers
Percentages question.
I solved the problem. I am getting the final answer as 8/15, however, the book says the answer is 7/15.Seems like they haven't subtracted 7/15 from 1 Please help.
Soumee
- 1,087
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1 answer
if x =0.9% then what is 100%?
This is to track hit rate on sales of items and for the life of me I can't visualise how to do it!
I have a value of 312 which represents a hit rate of 0.97% of transactions.
I need to work out what the 100% number of transactions is.
skillawn
- 3
0
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2 answers
How to solve this percentage question?
The Price of A is twice that of another fan B. The price of A is increased by 10% and that of B is decreased by 20%. Find the percentage decrease in the sum of the prices of the fans.
I am fighting myself to solve this one.
Ralph Stunn
- 13
0
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1 answer
Need math help on my real life problem (problem of unequal percentages - I think so)
Over the year 2017 I was suppose to spend my income as follows
10% on emergencies
20% on investment
50% on running expenses and
20% on big purchases
but instead my actuals are now showing as
6% on emergencies
21% on investments
52% on…
Arun
- 111
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1 answer
Have I got these percentage calculations right with the math?
Disclaimer: These are hypothetical scenarios, not real.
In 1995, a Ford Mondeo costs £13,695 for a basic model.
In 2017, a Ford Mondeo costs £18,550 for a basic model.
To work out how much the price has gone up in those years, I did:
13,695/18,550 =…
avenas8808
- 129
0
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0 answers
What does this formula mean? What is the name of it?
I am writing here because I have my doubts about a formula
I was looking for a formula that provides me a range of number into percentage.
Let me explain what I mean.
I have a Minimun and a Maximum number in this case.
$Min = 0$ and $Max =…
FrankJR
- 1
0
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1 answer
A, B and C in percent
If A is 50% larger than C and B is 25% larger than C, then A is what % larger than B?
I know the answer but I do not know why it is that as i do not understand how to reach it, I would be extremely happy if anyone could help:)
0
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1 answer
Subtracting from an investment each month question
So I have this maths question which I am struggling to solve as it seems to be a backwards compound interest or possibly an annuity question. I was wondering whether anyone might be able to provide a hint as to how I can do this question as from…
User0015
- 15
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2 answers
Profit or Loss Justification
What is the justification of the following two sentences:
1.If an article is sold at a gain of 35% then its selling price is 135% of Cost price.
If an article is sold at a loss of 35% then its selling price is 65% of cost price.
nban
- 39
0
votes
1 answer
Finding the percentage to scale in img
I am trying to scale one img based on its size on the screen to a size of max space on my paper. I want to get a percentage so that way I could just plug it into my calculator and easily convert each size of the elements of the img to the…
RetroCUBE
- 19
0
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1 answer
Calculate opposite percentage
This is a bit of a strange question, I came up with a simple analogy.
Say I have test results, for a group of students. And percentage of students passed is $p$, failed is $f$.
I want to calculate the value of $p$ from $f$, bear in mind they are…
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0 answers
How do I calculate the number of items I can purchase given a percent discount?
Given a certain amount of money, m, and a percentage discount, d, how do I calculate the number of items, i, that I can purchase?
Is it simply $i = {m \over 1-d}$?
TheChemist
- 101
0
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4 answers
How to get original number from a subtracted percentage number
Assume I have some values like this:
91
4550
773500
etc...
I know all of these values already subtracted with 9% like this :
100 - 9 (9 is 9% of 100) = 91
5000 - 450 (450 is 9% of 5000) = 4550
850000 - 76500 (76500 is 9%…
Hamed Kamrava
- 373