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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1answer
35 views

Need a number that when added 13% will total 70. [on hold]

Yes I have no idea how to calculate this.
-2
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0answers
27 views

If I have a 75% chance of winning . What is the probability of losing 4 in a row and also 5 in a row? [on hold]

I need to work out the above problem. I have read a similar equation on the site somewhere but still I'm not confident I have grasped the maths . ...
-1
votes
1answer
13 views

Calculate commission from sale [on hold]

A salesman's monthly commission is 15% on all sales over $\$15,000$. If his goal is to make a commission of at least $\$3600$/month, what minimum monthly sales figures must he attain?
0
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1answer
15 views

Average Percentage Change for Positive & Negative % changes

How do you calculate the average percentage change for the following: 1) +5.2% 2) -1.25% 3) -1.74% 4) +4.21% Using all four numbers together.
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votes
0answers
27 views

Number sense. Math help please. [closed]

You go shopping at sportchek for a new pair of skates and you know you are allowed to spend between $\$100$ and $\$125$ with taxes included. One pair of skates has a ticket price of $\$184.99$. What ...
0
votes
1answer
11 views

How do I calculate the percentage something has increased by x times

First time posting here, so please be gentle Suppose I have a numerical value which has sustained linear growth over 2 years Lets say in Jan 2013 the figure is 22,000, and in Jan 2015 it's 33,000. I ...
0
votes
1answer
8 views

Calculate profit in investment by a person joined x months later

A and B enter into Partnership investing rs 12000 and 6000 respectively. After 8 months, C Also joins with capital of 15000. The share of c in the profit of 45600 after 2 years will be ? I assume the ...
1
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1answer
13 views

Comparing Percentages without calculating

Consider the following imaginary scenario There are two groups X and Y containing six categories A,B,C,D,E and F which represent ethnic groups ...
1
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3answers
16 views

What is the Cost Price of a Commodity which has a Loss of 2%

When a commodity is sold for \$34.80, thre is a loss of 2%. What is the cost price of the commodity? The answer choices are as follow: \$26.10 \$43 \$43.20 \$46.40 I tried to solve this by ...
1
vote
1answer
20 views

What's the Total Number of Candidates who Applied for the Exam?

In an examination, 5% of the applicants were found ineligible and 85% of the eligible candidates belonged to the general category. If 4275 eligible candidates belonged to other categories, then how ...
0
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1answer
17 views

Percentage depreciation formula

The population of a city increases by 5% annually. If its population in 2010 was 138915 then, What it was in 2007 ? ...
12
votes
7answers
449 views

Finding total after percentage has been used?

Tried my best with the title. Ok, earlier while I was on break from work (I have low level math, and want to be more fond of mathematics) I work retail, and 20% of taxes are taken out, and I am ...
0
votes
0answers
14 views

Comparing Large differences in Percentages

Question: how would I make up for percentages when comparing two extreme differences.? ex: One country's population is 5 million and another 66 Million. the 5 Million population spends 45% on ...
1
vote
1answer
28 views

Exam FM problem. Bonds

the following problem is what I am working on. Suzan can buy a zero coupon bond that will pay $1000$ at the end of $12$ years and is currently selling for $624.60$. Instead she purchases a $6\%$ ...
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votes
2answers
19 views

percentage and ratio with weight [closed]

Coffee powder costing $\$12.75$ per kg is mixed with coffee powder costing $\$8.95$ per kg in the ratio 5 : 7 by weight. The mixture is sold at $\$12$ per kg. Find the gain percent
1
vote
1answer
13 views

Quick way to express percent from negative interval

I have some data which looks like this: I get a number in the -6/+4 range and I need to express it with percent. If I get 4 of course the result is 100%, If I get -6 is 0%, etc. Is there a quick ...
0
votes
1answer
16 views

How to represent a ranked number as a percentage?

I couldn't do better with the title so let me try and explain: Say I have two numbers: items and rank. ...
-5
votes
1answer
36 views

house keeping and house hold [closed]

A fish merchant bought a container of fish for $\$36000$. He Sold $1/2$ of the fish at a profit of $20\%$ and $1/6$ of it at a loss of $10\%$, At what price must he sell the remaining to make the ...
2
votes
1answer
14 views

Percentages and Concentrations

What is the concentration of a sugar solution made by mixing 1 kilogram of 12% sugar solution with 2 kilograms of water. Sorry about the title, I'm not sure what to call this. I'm really not sure ...
0
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0answers
18 views

Question on accrual percentages with contributions

Let's say I contribute a random amount per month to an account. I do this on the 1st of the month. For January through April, my contributions were 100.00, 120.00, 150.00, and 100.00. On April 11th I ...
1
vote
1answer
31 views

Finding the Number of Specific Items from a Total when Two Percentages are Involved [closed]

I'm trying to make an Excel calculator for a video game that I play. In the game you defeat enemies for gold. I need to know how (or if) it is possible to accurately predict the type of enemies that ...
0
votes
3answers
34 views

Explanation of calculator percentage key

I would really appreciate some help with this question. I have asked few people but nobody could explain. When you use calculator and enter these values you get different results. Why? Example: 100 ...
0
votes
5answers
42 views

Proportions with Percentages

How would I solve this using a proportion? What is 2% of 1/2? I tried doing 2/100 = x/50, but I'm not sure if its right.
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votes
1answer
47 views

Calculate Percent of Range of Numbers

If I have a range from $-4$ to $4$, how can I figure out what $60\%$ of that range is? Pictorially: I'm looking for $x$ such that the distance from $-4$ to $x$ is $60\%$ of the distance from $-4$ ...
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votes
1answer
53 views

20% of X is Y, then X is? [closed]

My math is trouble ! Question: Number of 1030 is 20% submission of of a number. what is that number ? That number is bigger that 1030. Let me explain in programming language: 1030 = 20% (X) - X , ...
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votes
0answers
47 views

Find the average flight delay, given the percentages of flights delayed by 1, 2, or 3 hours

At Podunk Regional Airport, 3% of flights are delayed by one hour, 2% are delayed by two hours and 1% are delayed by three hours. The other 94% of flights are on time. What is the average delay, in ...
0
votes
2answers
26 views

Two Approaches to Calculating Combined Percentages

Upon some event there is a 50% chance that something has a 75% chance of happening. It is my understanding that there is a $.75/2 = .375$ probability of this. Is there any way to know the probability ...
0
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0answers
28 views

Percentage problem for fair usage

I need some help for calculating fair usage percentage I got $50000$ main credits to use daily and $30$ users in my website. Each users bought different number of sub credits. For example user ...
1
vote
1answer
20 views

Find compound growth rate from cumulative totals

I'm a bit out of my depth here, so please feel free to correct any errors in terminology, etc. I'm looking to solve for a percentage growth rate. I know the starting population, the number of ...
0
votes
2answers
87 views

What does it mean to “cut-off 10% your weakest exam”?

Say that I have two exam grades: $$e_1$$ and $$e_2$$ and that exam $e_1$ is worth $p_1$ of your grade and $p_2$ percent of your grade ($p_1 + p_2 = 1 $). If on top of that weighting I promise to ...
-1
votes
1answer
35 views

What is my maths score as a percentage?

In my maths module, there are 2 phases. In the 1st phase, there are 2 tests. In the 2nd phase there is 1 test. Phase 1's total weight is 60% and phase 2's total weight is 40%. This is what I ...
0
votes
1answer
19 views

Work hourly wage, percentage increase

The wage of jack is increased by 15% and at the same time, the working hours is decreased by 10%. Then, by what percent the hourly wage of jack is decreased or increased? (approximately) I tried ...
2
votes
3answers
232 views

Getting percentage difference between two numbers?

For example, if someone got a raise in salary and they were getting paid 80,000 and are now getting paid 85,000 how can you work ...
0
votes
1answer
18 views

Help clarifying fraction and percentage question.

I have the following problem: Convert the mixed number $18 \frac 25 \%$ to an improper fraction, then, use the definition of percent to convert to fractional notation. If I follow the steps of ...
4
votes
3answers
65 views

How to calculate what percentage of 228 is 199?

I'm a simple man who doesn't know much math. Sometimes in my work and life I've to do math calculations. Today was one of those days and I've spent the last hour trying to figure this out. Look. ...
0
votes
1answer
24 views

What is 90% of a 1:10 scale drawing? [closed]

I have reduced a 1:10 scale drawing by 80% and 90%. What are the new scales respectively? Thanks in advance, Digby.
0
votes
1answer
16 views

What will the average amount be by year 2025 and 2050?

The HDI for Burkina Faso is $0.388$. Annually, its average HDI increases by $2.6090\%$. If this continues what will the HDI be by $2025$ and again by year $2050$?
0
votes
1answer
21 views

Percentage Increase and Decrease

I am having a kind of a chicken-egg problem. For example, I am wholesale merchant and I want to sell an orange for \$100 to the end user. I know that the retail merchant adds 12% on top of my price, ...
0
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0answers
11 views

Solve for X: How to calcuate proportional margin?

I dont know what is the name of these series. But we have the values for 1. A1, A2...An 2. P1, P2...Pn 3. FinalSalesAmount We need to calculate X in in the below equation: A1/(1-P1*x) + ...
0
votes
0answers
21 views

Deciphering game formula

Hello I'm trying to find a Formula of a certain system(Game) and would like some help. I will try not to get into the context of the game too much, but some times it will be necessary for better ...
0
votes
3answers
158 views

What percentage of 316.1 million is 20 million?

I am horrible at percentages and I keep getting 15.805% as the answer to the question posed in the title, but according to others that is wrong and the answer is 6.33%. I can't wrap my head around ...
1
vote
0answers
13 views

Help with finding an optimal bilingual skill-based routing calculation.

First time post, I'm not sure if it is in the correct forum but this seems to be as a good place to try: I was wondering if anyone out there had experience dealing with a similar issue or knew of any ...
0
votes
2answers
32 views

10% of ten English pounds £

I, unfortunately, have serious dyscalculia and struggle with maths. This makes figuring out simple everyday maths quite difficult. I'd really appreciate the help with this. Thanks in advance.
3
votes
1answer
37 views

Calculating percentages of a percent of a percent

A student is taking a class where $40\%$ of his or her grade is based on homework and the remaining $60\%$ is based on tests. There are a total of 12 homework assignments and 4 tests. The student ...
2
votes
2answers
26 views

A Percentage of Averages

A company brags about the speed of their service, "75% of our assignments are completed in an average of 20 days." Is this a meaningful claim? Or is it kind of like saying, "60% of the time, it ...
0
votes
1answer
43 views

What information guarantees a ranking in the 90th percentile is greater than a ranking in the 70th percentile?

Consider the following facts: Person A's salary is in the 90th percentile in Company A. Person B's salary is in the 70th percentile in Company B. The question is: What piece of information is ...
0
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0answers
22 views

Is this a proper formula for return rate?

Suppose we want to find the return rate of a casino game. For example, if a player brings 1000 USD to the game, pays a total cost of 1000 USD to play the game, regardless of the amount won (I will ...
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votes
1answer
13 views

Given a % of change and the resulting value after the change, how do you calculate the original value?

Given a % of change and the resulting value after the change, how do you calculate the original value? For example, X increased by 50% = 150. In this case we can easily use guess and check to see ...
0
votes
0answers
74 views

Not getting the percentage prblem

In a group of people solicited by a charity, 30% contributed \$40 each, 45% contributed \$10 each and the rest contributed \$12 each. What is the percentage of the total contributed came ...
1
vote
1answer
20 views

Percentage increase of two percentages

Can anyone help me with this problem? What is the percentage increase from 27.7% to 28.2%? I came up with 1.8% but my brother keeps telling me it's 18%