Percentages practice problems - page 8 of 99
Percentages are a way to express a number as a fraction of 100. They are often used to express a proportion or rate, such as a percentage of total sales or a percentage increase or decrease in a value. For example, if a product sells 25 out of 100 units, the percentage of units sold is 25%, which can also be written as 0.25 or 25/100.Percentage points, also known as percentage point change or "pp" for short, is the difference between two percentages. It is often used to express the change in a variable over time or between two groups. For example, if a company's profits increased from 10% to 20% over a year, the percentage point change would be 10 percentage points (20% - 10% = 10%).
Number of problems found: 1962
- A vendor
A vendor bought an article for $900 and sold it for $1260. What is the profit percentage? - Three colors
Find the probability that three balls of the same color will be drawn from fate with ten white, ten red, and ten blue balls. - Ace or king
What is the probability that we will choose an ace or a king when choosing from a deck of sevens cards? - The Chemistry test
The Chemistry test contained eight questions, each with 3 points. Peter scored 21 points. How many percent did Peter write a test? - Selling price
Find the selling price. Cost to store: $50 Markup: 10% - Finding the base
Find the unknown base of percent: 12.5 percent of what = 16? - Efficiency
A certain device consumes 28 kW and delivers 14 kW. Find its efficiency. - Car inflation
What percentage of car price increases if the price rises from €1880 to €2200? - Determine 3880
Determine how much equals 16% of a) 32, b) 44, c) 34, d) 25 - One-fifth 80438
By what percent does the area of a square increase if its perimeter increases by one-fifth? - Efficiency 41901
What percentage is the loss of a machine that works with an efficiency of 0.78? - Base of percentages
7% of the base is 35 kg. What is 39% of that base? - Determine 37931
40% of the base is 1200. Determine what the base is. - Unknown 23401
27% of the unknown number is 12 fewer than 33% of the same number. Find an unknown number. - Increase 7409
If you increase the unknown number by 14 percent, you get the number 136.8. Find an unknown number. - Percentage 7207
There are 1.5 times more women in the cinema than men. What percentage of women are in the cinema? - Minutes 6069
How many minutes is 60% of two hours? - Increase 5366
I think the number. If I increase it by 25%, I get the number 100. What number do I think? - Percentage 3138
What percentage are 720 liters of 6m³? - Competitors 2417
20% of the people lost in the races, and the total number was 100 competitors. How many competitors lost?
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