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
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 rate is over $80$%. Is it certain, that at some…
user3275222
- 613
2
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2 answers
Percentage and numeric relations
I would like to know the simplest approach to the followings:
Que 1:
One student scored $14$ marks more than the other and his marks were $60$% of the sum of their marks. Find marks obtained by them.
My Approach:
Step 1: Assuming students scored $x$…
divy3993
- 177
2
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2 answers
5 grades into 4 percentages. English teacher in need of help.
I have five numbers, three of them each represent 25% of an average and the last two are the remaining 25%. One the last two numbers is 10% and the other 15%, how do I add them up into one number ?
I have 35 students. One of them has the following…
Tropicop
- 21
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1 answer
Question referring to percentage increase
Why if you evaluate the percentage increase between the first and last number of a sequence it doesn't equalize with the partial sum of the increases? Suppose you have the sequence $1,3,6$. The percentage increase of 1 to 6 is 500%. But if you do…
matt_zarro
- 431
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4 answers
What kind of graph is this? A pie chart?
Besides a gross use of Comic Sans, what kind of graph is this? I've seen it used for population statistics before, but I don't know what it's called.
My first instinct was to just say "bullet chart" due to process of elimination. After researching…
Taylor Lopez
- 123
2
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1 answer
Profit Share Distribution > 100% Total?
So I read an article today which asserted the following:
Canaccord’s latest estimate shows Samsung making 15 percent of profits in smartphones, with Apple making 92 percent. (The numbers add up to more than 100 because everyone else in the…
Haney
- 123
2
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5 answers
Squaring quantities with units
I am programming a script to an online store and a serious mathematical problem happened, and I cannot solve it!
This is the problem: if a person has only 10 cents (on any monetary currency, I will use US Dollar for example) it's the same as say…
2
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2 answers
A question about percentages of acid solution being added to more acid solutions.
how many liters of an 80% acid solution must be mixed with a 15% acid solution to get 390L of a 70% acid solution?
I'm taking a math prep class in college and I never learned this stuff in high school. The professor wont help me
whitney
- 21
2
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1 answer
A cinema has three screens. $600$ people visit the cinema. $35$% go to screen 1. Four times as many go to screen 2 as go to screen 3
A cinema has three screens.
$600$ people visit the cinema.
$35$% go to screen 1.
Four times as many go to screen 2 as go to screen 3.
How many go to screen 2?
This is what I have done:
$35$% of $600$ is $210$.
$600-210=390$
$4x+x=390$
$x=78$
$312$…
laila
- 23
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vote
1 answer
The Car's cost is 9,00,000 and it is inclusive of local tax of 2%. How to find the original value of car?
The Car's cost is 9,00,000 and it is inclusive of local tax of 2%. How to find the original value of car?
As far as calculation goes I calculated it as below
2% of 9,00,000 is 18,000
Final value is 9,00,000-18,000=8,82,000
But actual value is…
Ravi Dethiya
- 11
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vote
2 answers
Inverse Percentages, Percentage issue
A house is sold for 457000 dollars , which gives it a profit of 19%, find the profit?
Could you guys please help? i know how to find the original price of something but I'm not sure how to find the profit in this case? it just confuses me a tiny…
Nancy
- 29
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vote
1 answer
Genetic Percentage
If a half-brother married a lady and then his half-sister married the ladies brother, what is the genetic percentage that the children share?
I know half-siblings share 25 percent and full siblings share 50 percent. Aunts and uncle's share 25…
Nayr006
- 13
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2 answers
Is there any shortcut to find the % increase or decrease?
My current salary is $3000$ and now it has become $3450$. The traditional way is to find the difference and divide by the start (base) value to find out the percentage increase.
$\frac{450}{3000}$ which is $15\%$. How can I do so quickly? Sometime…
dexterous
- 621
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0 answers
Formula or graph for decreasing percent change when a constant is added to variables
If the title doesn't make sense I will try to explain via example.
There were 100 apples, 80 were purchased; 80% were purchased
Add 100 to each, apples and purchases
200 apples, 180 purchased; 90% were purchased
300 apples, 280 purchased; 93.33%…
Vidro3
- 143
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1 answer
Scheduling teams to complete a percentage of work
I'm trying to work out how to allocate work to different teams, and my brain is struggling with the logic.
I have three different teams who arrive in a geographic area at different dates. There's a set number of jobs in the area, and each team has a…
gregdev
- 113