Percentages + system of equations - practice problems - last page
Number of problems found: 210
- Ratio three numbers
Three numbers SUV are in the ratio 2:3:4. Their sum is 90. Find these numbers and write their add and sum. - Alcohol 2
Two types of alcohol, one 46% and second 64%, give 16 liters of 54% alcohol. How many liters of each type are in the mixture? - Brunette
The girls attending primary school are 30% blondes and 70% brunettes. 81% blondes and 19% brunette has blue eyes. How many girls attend school altogether if 470 girls have blue eyes? - Flowerbed
On the flowerbed were planted 280 flowers - pansies and crayons during the first week, wilts quarter of pansies and an eighth crayons, which is 20% of all flowers. How many pansies were planted on the flowerbed?
- Pharmacy
At the pharmacy are in one container 20% solution in the second 50% solution of disinfectant. They need to prepare 4 L of the 48-percent solution. What amount of solution from each container is needed to mix? - Addends
Number 681 divided into the two addends that the first was 9 greater than 60% of the second. Determine these addends. - Suit
The suit cost 119 euros. How much cost the pants if it is 50% cheaper than the jacket? - Paddlers
Students of canoeists trip traveled in three days 102 km. On the second day, they traveled 15% more than the first day and on the third day 9 km over the second day. How many kilometers are traveled each day? - Barrel of oil
The barrel of oil weighs 283 kg. When it molded 26% oil, it weighed 216 kg. What is the mass of the empty barrel?
We apologize, but in this category are not a lot of examples.
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