Percentages practice problems - page 33 of 114
Number of problems found: 2276
- Four-digit number creation
Create all four-digit numbers in which 0, 2, 5, and 9 are not repeated. A) How many such numbers are there? You solve using a tree diagram. B) What percentage of them are even? - Skate discount price
Skates have fallen by 36% after the winter season on sale. Their price after the discount was 48 euros. What was the original price? - Milk cartons
Monica measured the dimensions of two different milk cartons. One had dimensions of 9*5.8*19.6 cm, the other 9.4*6.3*17.3 cm. She wanted to see if less material was used to make a particular box. Check it out and find out what percentage of material is sa - Stool cover fabric
Susan has an old stool shaped like a cube with an edge length of 80 cm. She wants to sew a new cover for it. How many square metres of fabric does she need, allowing an extra 15% for stitching and folds? - Bike discount increase
Peter chose a bike for €750 in a bike shop. With accessories, its price increased by 10%. As the store had a summer sale, Peter received a 10% discount on the purchase price. How many euros did he pay for the purchase? - Test time percentage
The time required to complete the test has a normal distribution with a mean of 50 minutes and a standard deviation of 10 minutes. What percentage of students take the test within 30 minutes? - Employee reward percentage
The employee received an extraordinary reward of 320 euros, 8% of his monthly salary in September. What is his monthly salary? - Grade commute students
50% of 9th graders of our Bratislava school are non-Bratislava pupils. One-third of them commute by bus, a fifth by bike, and seven pupils walk. How many students are in the 9th grade? - Cancer in woman population
In a particular population of women, 40% have had breast cancer, 20% are smokers, and 13% are both smokers and have had breast cancer. If a woman is selected at random, what is the probability that she has had breast cancer, smokes, or both? - A town
A town has a population of 18000 and grows by 2% every year. What will be the population after 11 years, to the nearest whole number? - Percentage - rhombus
If the side of the rhombus in the image increases by half, by what percentage will the area of the rhombus increase? - Circle waste percentage
A full circle is cut from a square plate with a side of 200 mm. What percentage of the plate is waste? - Percentage - prism and cube
Prism with square base a=25 cm, height h=45 cm. cube: b=15 cm 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? - Eighth ninth graders The number of eighth graders in primary school is 80 percent of the number of ninth graders. There are 54 eighths and ninths. How many ninth-graders go to this school?
- Black car probability
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 - Vierka account interest
The parents deposited 2,000 euros in Vera's daughter's account at an annual interest rate of 2%. If the bank adds interest, how many euros will be in the account in a year? - Percentage - b/g students There are 584 students at the school, 421 of them boys. What percentage of students are girls?
- Concentrate - juice
To produce one litre of 100% juice, 2 kg of fruit are needed. Juice is made by pressing the fruit into a pulp, drying it to obtain a concentrate, which is then transported to a processing facility where it is diluted again. How many litres of fruit juice - Loan interest periods The bank provides loans with an interest rate of 5% pa. How much interest will you pay if you borrow 5,000 euros for: A) 1 year B) 1/2 year C) 1/4 year D) 5 years?
- Wendy Wendy deposits R6500 into an account, paying 8% annual interest compounded monthly. How much money will be in her account after 84 months of paying 8% annual interest compounded continuously?
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