Percentages practice problems - page 55 of 114
Number of problems found: 2276
- City plan
The city planned to repair the highway section for 20 hours. Workers reduced this time by 20%. How long did the repair take? (express in hours and minutes) - The test
The test contains four questions, with five different answers to each of them, of which only one is correct, and the others are incorrect. What is the probability that a student who does not know the answer to any question will guess the right answers to - Chestnuts
Three divisions of nature protectors participated in the collection of chestnut trees. 1. The division harvested 1250 kg, the second division by a fifth more than the first division and the third division by a sixth more than the second division. Thus, th - Quadrilateral shelter
The shelter has the shape of a regular quadrilateral pyramid without a front wall. The length of the base edge is 3 meters, and the shelter's height is 3.5 meters. How much canvas must be bought to sew it if we have to increase consumption by 20% for fold - Production increase percentage The company produced 300 vehicles a day. What percentage did production increase when they made 1,560 vehicles in 5 days?
- Herbs drying
By drying, 75% of the weight of the herbs is lost. How many fresh herbs do you have to dry if you want to hand in 1.2 kg of dried herbs? - Rectangular land
On a rectangular plot of land with dimensions of 35 m and 18.5 m is a house with a square floor plan with a side of 14 m. What % of the land is not occupied? - Cone roof
How many m² of roofing is needed to cover a cone-shaped roof with a diameter of 10 m and a height of 4 m? Add an extra 4% to the overlays. - Alarm systems What is the probability that at least one alarm system will signal the theft of a motor vehicle when the efficiency of the first system is 90% and of the independent second system 80%?
- Mobile operator 2
A mobile operator compiled statistics on the average monthly number of received calls to the customer line. In 2010 it was 6000 calls, which were billed altogether at 360€. Fill in the table, if you know that the price per 1 call was always the same. Year - Employee bonus calculation
The company has 1,440 employees (men and women). 18.75% of all men and 22.5% of all women received bonuses for above-average results. A total of 20% of employees were rewarded with bonuses. How many men and how many women are employed in the company? - Honor student calculation
Six 7th graders, representing 24% of all graders, had honors. How many students are in the class? - Tiles
The pupils of the building school have to calculate how many roof tiles they will need to cover the roof of the house in the shape of two rectangles measuring 10 x 7.2 m. One roof tile covers a rectangular area of 22 cm x 32 cm. How many tiles will they n - Paper collection calculation In the eighth grade, the children gathered up 850 kg of paper. Class 8 A collected 50 kilograms more than 8B. Class 8 C collected 200% of what class 8 A is. How much paper did each class collect?
- Circular dragon
The dragon has the shape of a circular section with a central angle of 40° and a radius of 35 cm. How much paper do we need to make if 10% is added to the curved ones? - Railway line
The straight railway line has a gradient of 16 per mille. What is the size of the pitch angle? - School pupil distribution 588 pupils attend the school. There are 10% more girls than boys. How many boys and how many girls are there?
- Christmas holidays
How many percent take Christmas holidays lasting 18 days from a school year that lasts 303 days? Round the result to two decimal places - Earnings distribution calculation
John, Paul, Peter, and Jan earned 42 thousand. John and Paul have the same. Peter is 20% more than Paul. George was one-fifth less than Paul. How much did everyone earn? - Lotto winnings distribution Three friends submitted a lotto for €600. Karel gave €250, Laco €200, and Josef gave the rest. They won €15,000 and shared the winnings in the same proportion as they contributed to the sport. How many euros did Josef receive?
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