Percentages - practice for 14 year olds - page 31 of 64
Number of problems found: 1271
- Gardeners 18653
Gardeners planted 16% more currant bushes than initially planned. They planted a total of 145 shrubs. What was the original plan? - Percentage 18513
The machine tool produced 516 pieces instead of the 480 parts originally planned. What percentage did it exceed the plan? - The surface area
How much percent will the surface area of a 4x5x8 cm block increase if the length of the shortest edge is increased by 2 cm? - Determine 17901
Determine the product's original price, which, after an increase of 20%, costs 90 CZK.
- Increased 17773
Salaries increased by 4:3. How much did wages increase? - Concentration 17633
If we mix 4l and 6l of differently concentrated salt solutions, we get a 12% solution. If we use 6l of the first and 4l of the second solution, we get a 13% solution. What is the concentration of each solution? - Percentage 17613
At a horizontal distance of 800 m, the ski slope drops to 220 m above sea level. Determine the percentage decrease. - Corona virus
Calculate an estimate of the GDP (Gross Domestic Product) percentage that declined due to the quarantine related to the corona COVID-19 virus that lasted for two months. During this time, economic activity is down by 80%. - Big Earth
What percentage of the Earth's surface is seen by an astronaut from a height of h = 350 km? Take the Earth as a sphere with a radius R = 6370 km.
- What percent
What percent of 51 3/5 is 47 2/5? - Czechoslovakia 17233
Slovakia has an area 38% smaller than the Czech Republic. Original Czechoslovakia had an area of 128,000 square kilometers. What are the areas of both states? - Coronavirus 17083
The railway company planned the repair of the railway tracks for 15 days. Only some employees showed up for work due to the coronavirus, and they extended the repair to 24 days. By what percentage did the repair time increase? - Discounts 2
The local fitness center offers membership discounts for hospital employees. According to the membership brochure, you will receive a discount of 25% on a membership that normally costs $65 per month. How much will you pay for an annual membership if you - Percentage 16423
The pizza has the shape of a circle and is divided into eight equal parts. My mother ate three parts. What percentage of pizza is left?
- Volume of wood
Every year, at the same time, an increase in the volume of wood in the forest is measured. The increase is regularly p% compared to the previous year. If in 10 years the volume of wood has increased by 10%, what is the number p? - Percents from percent
How much is 13% of 20% of 500 greater than 8% of 14% of 200? - Lemonade
Iva added one liter of 100% fruit juice to 3 liters of water. She left two liters of it for Alice and Beata. She added two more liters of water to the remaining two liters of lemonade and offered it to other friends. a. What percentage of juice did Alena - Capacity 16253
The barrel is filled with water to 65% of its capacity. After adding three 10-liter buckets of water, the filling capacity of the barrel is already 77%. How many liters of water will fit in the barrel? - Reward
Janko and Peter divided the reward from the brigade so that Peter got 5/8 of the reward. What percentage of Janko's reward got?
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