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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Les say avg time to travel in train from NY to NJ is 75 mins
Les say avg time to travel in train from NY to NJ is 75 mins.
Les say they get a faster train and they are 1000 times faster. What would be the new avg time to travel from NY to NJ?
I got 75 / 10.00 which is 0.75 sec?
user316881
- 11
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2 answers
Formula to get percentage from a target, start, and current numbers
I have 3 numbers:
start = 0;
current = 4;
target = 10;
I want to figure out how far along current is in the percentage from start too target;
So in this example the percent would be 40%.
How would I figure out this if start were 2? I'm struggling…
ditto
- 113
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2 answers
Percentage relations between x and y.(Relation between two variables)
I would like to know easiest method to solve following:
Que 1:
If 10% of x=y, then y% of 30 is same as what % of x?
My Approach:
Step 1: (10 * x)/100 = (10 * y)/100
Step 2: (30 * y)/100 = (3 * y)/10
Don't know further.
Que 2:
What percentage of…
divy3993
- 177
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4 answers
Profit and loss - using false weights
A shopkeeper cheats to the extent of 10% while buying and selling by
using false weights. His total gain is
This looked as a simple question to me. But when I searched for answers, i could see there are two answers for this question. Majority of…
Kiran
- 4,198
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1 answer
If M is $150\%$ of $N$, then $N$ is what percent of $M + N$?
My solution was very naive:
Let $N = 100$. Then, $M = 150$. Then,
$$\frac{N}{N+M}= \frac{100}{100+150}= 0.40$$ which corresponds to $40\%$. Therefore $N$ corresponds to $40\%$ of $M + N$.
I think the solutions is wrong. I need help to find my…
maruf
- 201
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1 answer
Calculate percentage of how far a number is away from a given point in a range
so I have some range, let's say $ [a,b]$ for $a,b > 0 $. Now I'm given some number $c \in [a,b]$, to act as some 'target' number. My question is, if I have another number, $x \in [a,b]$, how can I find a percentage of how close $x$ is to $c$. Where…
HalfBit
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What should be the minimum no of students in a class room given the following conditions?
What should be the minimum no of students in a class room in which 25% student score 75 marks,10% student score 85 marks,15 % student score less than 50 marks, 25% score 60 marks and remaining student score more than 90 marks..
My Approach:
75…
justin takro
- 1,288
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1 answer
Higher the percentage, lower the value
I need to work out a grading based on a percentage. The higher the percentage, the lower the grading. There are 7 major grades in the score, 1 to 7
(100% = 1) &
(0% = 7)
I need to work out the score value based on the % value. Is there a way to do…
Nacho Shaw
- 11
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1 answer
To find days in which order will be completed
A company asks for production of $x$ number of goods. The company produces $y$ number of goods, daily out of which z% are unfit for sale. To find in how many days will the order will be completed ?
How do i solve this? Should i assume that it…
Taylor Ted
- 3,408
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1 answer
Finding quantity of mixture
In a mixture of milk and water, there is only $26$% water. After replacing the mixture with $7$ litres of pure milk, the percentage of milk in the mixture become $76$%. The quantity of mixture is
(a) 65 litre
(b) 91 litre
(c) 38 litre
(d) 87…
Taylor Ted
- 3,408
1
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3 answers
By how much percent sugar consumption should be reduced
If the price of sugar is increased by $7%$, then by how much per cent should a housewife reduce the consumption of sugar, to have no excess expenditure
ATTEMPT
Let family consume $100$ units of sugar. Price of $1$ unit is $\$100$.
Total expenditure…
Taylor Ted
- 3,408
1
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1 answer
Keep video for certain time frames based upon percentages? (85/13/2 breakdown)
I'm trying to build an equation for an Excel spreadsheet that is used to calculate storage requirements for video retention over a given policy. Currently it works great for policies that only have one retention period where everything is kept for…
Trevor
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2 answers
How do I add a percentage to a value then subtract it again to get the same number?
I'm doing a budget for work where I have to add $15\%$ to a price. But then my client is going to subtract $15\%$ from the total but I need to make the original price back. I.e.
$$£100.00 + 15\% = £115.00$$
$$£115.00 - 15\% = £97.75$$
My problem…
user253466
- 11
1
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3 answers
Trying to figure out my percentage raises at work
If I make $ 14.40 right now and max out at 24 an hour, how many seperate 2% raises will I need to get to be at the max?
Is there a simple math equation to get this answer or do I have to just keep multiplying 2% to each new wage and then add up how…
mary
- 11
1
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1 answer
Algorithm for finding fee coverage total
Is there a mathematical concept involving prediction of a resulting value from a set equation?
Here is the situation. A payment processor charges 2.9% + $.30 per credit card transaction. A non-profit wants to allow donors to cover this fee. The…
JoshJoe
- 113