Percentages - practice for 13 year olds - page 13 of 55
Number of problems found: 1098
- Percentage 66714
They cut a full circle from a square plate with a side of 200 mm. What percentage is waste? - Percentage 66684
Prism with square base a=25cm, height h=45cm. cube: b=15cm a) what percentage of the volume of the prism is the volume of the cube? b) what height should the prism have to have the same volume as the cube? - Probability 66644
Oskar observes the arrivals and departures of cars in the parking lot. At one point, there were 99 cars in the parking lot: 25 red, 17 white, and the rest were black. What is the percentage probability that a black car was leaving the parking lot at a giv - Percentage 66564
There are 584 students at the school, 421 of them boys. What percentage of students are girls?
- Deposited 66314
Mr. Adam and Mr. Milan each deposited 20,000 euros in their bank. After the first year, Mr. Adam added 600 euros and Mr. Milan 550 euros. What was the interest rate of each bank? - Interest 66304
How big would the Novak family take out a housing loan if they paid an interest of 5500 euros after the first year and the interest rate of this loan was 5.5% p. and.? - Flowing 66174
How long in an hour will a 30m, 15m, and 2m pool be filled with water flowing at 900l / min if it is 90% full? - Original 66004
They reduced the shoes by CZK 132 to 85% of the original price. How much did they cost before the discount? - Discount 65854
The TV fell first by 20%, then by 10%. How much did it cost after the second discount if: A) before the first discount cost 450eur? B) after the first discount, cost 450eur?
- Percentage 65844
Mr. Josef sold home-grown potatoes at 79 cents per kilogram. When he had the last 5 kg, he told the customer: collect them all for 3 euros! By what percentage did Mr. Josef reduce the potatoes? - Reduction 65814
The Shop first reduced the tablet price by 10%, and later Shop reduced the new price by 20%. After the tablet cost € 720 to double the reduction, what was its original price? - Increase 65794
The area of the square is 36 cm². What will be the area of the square if we increase the length of a side by 25%? - Hypotenuse 65744
Construct a right triangle ABC with the hypotenuse AB: a) | AB | = 72 mm, | BC | = 51 mm b) | AB | = 58 mm, | AC | = 42 mm - Numbers 65734
There are 100 tickets in a pocket with the numbers 1 to 100. What is the probability that we will randomly draw a ticket with a number starting with the number 5?
- Annual interest
How many euros did Mr. Slovak deposit in the bank if, after a year, at an annual interest rate of 3.8%, he had 2,076 euros in his account? - Possibility 65535
The bank offers a term account with the possibility of early withdrawal with an interest rate of 1.85 percent pa. Milan put 2,500 euros on it on January 2. How many euros will he get if he withdraws the money after eight months? - Deposited 65534
Danka and Janka deposited their money in the bank in an account with an interest rate of 2.9 percent pa. How many euros did Janka invest if she earned 4.64 euros in interest and Danka 29 cents less? - Slovakia's 65524
Slovakia's VAT rate is reduced to 10% on some goods (e.g., books, textbooks, and medicines). Normal VAT is 20%. How much would we pay for a book that cost 69.00 euros if we didn't have to pay VAT? - Processing 65514
The Nováková family took a loan (loan) of 120,000 euros from the bank. What was the amount of the fee for processing, setting up, and providing the loan if, according to the bank's fee schedule, it is 0.80% of the loan volume, but at least 250 euros and a
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