Percentages practice problems - page 86 of 112
Number of problems found: 2224
- Share price
The initial share price first fell by 2%, and then this new price rose by 20%. The final share price is CZK 2,400. Calculate the initial share price. - Spray - mixture
4 per mille of active ingredient is needed per 6 liters of water to prepare sprays. How many milliliters of active substance do we add to the sprays? - Gold extraction
There are 1.2 per mille of gold in the rock. How many grams of gold will they get from 45 tons of raw material? - Circle waste
Calculate the percentage of waste when we cut out 4 of the largest possible circles from a square sheet with sides of 1 meter. - Coat price
The cost of the coat, 1500kc, was reduced by 20% and increased by 20% after a week. What is the price? - Collection weight
Tomáš brought the collection 20 percent less than Michal. Filip brought half of what Tomas did. Together, they brought 52.8 kg. How much did he bring? - Interest rate
At what annual interest rate would we get an interest of 60 euros on a deposit of € 6,000 for three months? - Break percentage
Students have classes from 8:00 to 12:30. One 15-minute break and three 10-minute breaks between lessons. What percentage of teaching is breaking? - Percents
How many percents is 900 greater than the number 750? - Above 100% Find 340 percent of the numbers 45 and 55.
- Percents of percentages
Calculate: (a) 5% of 25% of 85 b) 4% of 20% of 1500 c) 83% of 20% of 25 d) 0.3% of 70% of 90 - Number increase Increase number 160 by: a) 25% b) 30% c) 150%
- Unknown number
16% of the unknown number equals the square root of the number 25. Find this unknown number. - Area and percents
Find what percentage is a smaller cube surface when the wall's surface area decreases by 25%. - Cuboid enlargement
By how many percent increases the volume of the cuboid if every dimension increases by 30%? - Cacao
Cacao contains 34% filling. How many grams of fill are in 130 g cacao? - Unknown number 7 16% of the unknown number is 21 less than the unknown number itself. Determine the unknown natural number.
- Coconut percentage
The bar contains 81g of coconut per 200g. What percentage of coconut does the bar have? - Cocoa percentage Chocolate has 86% cocoa. Determine how many grams of cocoa are in 165-gram chocolate.
- Percentage calculation Determine how much equals 16% of a) 32, b) 44, c) 34, d) 25
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