Percentages practice problems - page 9 of 100
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: 1984
- Equilateral 83013
Traffic signs are equilateral triangles with a side length of 900 mm. How many euros does a galvanized sheet cost to produce 50 pieces of such brands if we consider adding 15% of the material for waste? The price of 1 square meter of sheet metal is 6.5 eu - 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. - Already 82989
The book has 1200 pages, of which Róza has already read 60%. How many pages has Rose not read so far? - Millimeters 82983
Determine what thickness of the shielding material will be required if we reduce the radiation to 3% of the original value if we know that a thickness of 6 mm will reduce the level of the same radiation by 9%. Round up to the whole value in millimeters (t
- Multiplying 82879
By what percent did the product price increase in the store if we proceeded with the price increase by multiplying the original price by 1.16? - Hectares 82876
There are 2.17 million hectares of forest in Slovakia. The Žilina region occupies 20% of the total area. How many hectares of forest are there in the Žilina Region? - Respondents 82860
The students surveyed the number of networks on the Internet. 94% used Facebook, 19% used Twitter, and 42% used Google. How many did not use Facebook if the number of respondents was 310? - Percentage 82856
By what percentage is the number 15 different from the number 12? - Dimensions 82810
The block has 10 cm, 20 cm, and 50 cm dimensions. We reduce the first edge of the cuboid by 20% and increase the second by 20%. How does the volume of the cuboid change? By how many percent?
- Accumulator 82755
The battery capacity is 50 Ah. With a current of 5A, we charge the accumulator to 100% capacity in 10 hours. To what percentage of capacity can we charge the accumulator with a current of 2A in 15 hours? - Parliamentary 82743
4/5 MPs took part in the autumn parliamentary meeting. 80% of those present voted for the proposed program. According to the rules, the program can only be approved if at least 60% of all deputies vote for it. Was the program approved or not? - Refrigerator 82732
The refrigerator was first discounted by 20% and then increased in price by 5%. Now the Zmrzlin family bought it for 420 euros. How much was the refrigerator before the discount? - Observatories 82707
Target C is observed from two artillery observatories, A and B, 296m apart. At the same time, angle BAC = 52°42" and angle ABC = 44°56". Calculate the distance of the target from observatory A. - 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?
- Calculate 82696
In the triangle ABC, b=5 cm, c=6 cm, /BAC/ = 80° are given. Calculate the sizes of the other sides and angles, and further determine the sizes of the tangent tc and the area of the triangle. - Yesterday 82688
A total of 680 adults visited the swimming pool yesterday, among whom there were 30% fewer men than women. How many men visited the swimming pool yesterday? - Represents 82661
The weight of the car with cargo is 7610 kg. The car's weight represents 23% of the car's total weight with cargo. What is the weight of the cargo? - Percentage 82623
The square in the picture has a side length of 6 cm. What percentage of the content is the colored part? - Calculation 82612
Let's assume that the interest in the bank is 10% and that we have saved €1000. 10% may seem like a good investment. However, if inflation is 6%, how much can we save in the bank in real terms? For the simplicity of the calculation, the income is not taxe
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