Percentages practice problems - page 70 of 102
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: 2038
- Profit gain
If 5% more is gained by selling an article for Rs. 350 than by selling it for Rs. 340, the cost of the article is: - Percent 5598
Peter earned a quarter more than Lucas. Lucas spent 20% of his earned money on dinner. Peter spent the same amount. How much percent did Peter spend? - Determine 5592
Karel took out a loan of EUR 600 from Ivan 20.2 at a 20% annual rate. From January 10.5, a loan of 1100 Euros at a 14% rate. From Milan 15.9, a loan of 900 Euros at an 11% rate. All three return 30.12. Determine the annual interest rate for all three loan - Probability 5576
Jana rolls two dice at the same time. What is the probability that she will score a total of four points?
- Representing 5562
The chess group consists of eight boys, representing 40% of all group members. How many girls go to the chess ring? - Burdened 5537
The product, burdened with 20% taxes, was sold for 600 CZK. How much would you sell for 10% of taxes? - Circumference 5493
By what percentage will the area of a square decrease if its circumference decreases by 17 percent? - Unknown variable
Find the number x, which if it increases by 2, then its square increases by 21 percent. - Ebay is not free
Be aware of eBay - the fee is painful if you sell something expensive. There is a lot of space for classifieds and local exchange away from global eBay. Calculate the ebay+paypal fee if you sell 3037 USD laptop. The formula for eBay fee is 0,30 + 10 % of
- Red balls
The bag has three red, 12 blue, and eight green balls. How many red balls must we add to the bag if we want the probability of pulling out the red balls to be 20%? - Available 5472
Alena and Marta want to go on vacation together. Alena lacks CZK 300 to buy the selected ticket, and Marta has 4 times that amount left over. We know that Marta has 50% more CZK available than Alena. How much does a ticket cost? - Competitors
In the first round of slalom fell 15% of all competitors and in the second round, another ten racers. Together, 40% of all competitors fell. What was the total number of competitors? - Tracksuit 5460
The tracksuit became cheaper by 15% later on sale and later by 10%. How many euros did Janka save if she bought this set after the second discount and paid € 45.9? - Rate or interest
At what rate percent will Rs.2000 amount to Rs.2315.25 in 3 years at compound interest?
- Calculate 5391
Viktor shot darts into a circular target with a radius of 5 cm. Inside the circle is a smaller circle with a radius of 2 cm. Calculate Viktor's chance of hitting a smaller circle in percent. - Non-transferable 5383
What percentage in a non-transferable year are Saturday and Sunday? - Missing 5374
There are 32 pupils in the class. How many pupils were missing from school if 12.5% were absent? - Needed 5373
The box is shaped like a cube with an edge 52 cm long. How many m² of sheet metal is needed to make a box with a lid? Add 5% to the folds of the lid and walls. - Vacation
Tomas spent 60% of his savings on his weekly vacation. He had 32 € left. How many euros did he have before vacation?
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