Percentages practice problems - page 35 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
- Volume increase
How much percent will increase in the pool 50 m, width 15m if the level rises from 1m to 150cm? - Isosceles right triangle
The area of an isosceles right triangle is 18 dm². Calculate the length of its base. - Sphere vs cube
How much % of the surface of a sphere of radius 12 cm is the surface of a cube inscribed in this sphere? - Class
In the 7C class, there are ten girls and 20 boys. Yesterday was missing 20% of girls and 50% of boys. What percentage of students are missing? - Salary increase
Ms. Merry's salary increased by 15%, which was 83 euros. What should you pay before the increase? - Percentage and rectangle
About what percentage increases the perimeter and area of a rectangle if both the sides are 12 cm and 10 cm long, we increase by 20%? - Road drop
On a straight stretch of road is marked a 12 percent drop. What angle makes the direction of the road with the horizontal plane? - Principal and interest
Peter put € 270 principal into the bank, and at the end of the year, the account was € 282. To what annual interest rate had Peter deposited money in the bank? - Bath salts
Bath salt A weighs 900 grams and costs 36,40 CZK. Bath salt B weighs 1000 grams but costs 85 CZK. How much is a bath salt A cheaper than B salt? - Interest p.a.
Calculate the value of the interest in the period of 1 year from the deposit 62000 CZK at 8 percent interest rate after deducting 15 percent tax. - Mr Novak
Mr. Novak earns an average 927 euros. When increasing the salary, they gave him a choice: ... What is a better choice for Mr. Novak? - Container
On the first day got off 1/4 of the water from the full container, second day, 1/5 of the remaining water. How many percent remain container filled? - The city
At the end of 2010, the city had 248000 residents. The population increased by 2.5% each year. What is the population at the end of 2013? - Tare
The gross weight of a shipment is 6927 kg, and its tare is 7%. Calculate the net weight of the shipment. - Work
Workers work five days a week and have 28 days of vacation a year. Calculate how many days is out of work and express it as a percentage. Consider that a year has 52 weeks. - Population 83002
Calculate how many people were born in the state; if the total population was 10,000,000 this year, the natural increase was 2%, and 5,000 people died. - Precisely 82697
The tennis player won precisely 55% of the balls during his serve. In doing so, he served less than thirty times. How many times did he serve? - Increased 81938
We increased the side of the square by 12% from the original 15cm. For a, what was the perimeter and area of the new square? By what percent did the perimeter and area increase? - Interest 81773
How much will the deposit grow at an interest rate of 10% p.d. a. for 72 days by €6? - Blackboard 79334
The biology teacher, Carrot, randomly called the students to the blackboard. There were 25 pupils in the class, and Mr. Carrot called Ludek, Silva, and Mathias. What percentage of the total number of students was called today?
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