Equations practice problems - page 249 of 251
Number of problems found: 5001
- Thrift woman
Calculate how long a grandmother must save to buy new shoes priced at 116 euros if she saves 2 EUR per month. - Number
Calculate the integer number divided by 24, gives 16 and the rest 7. - Demographics
The population grew in the city in 10 years from 30000 to 34000. What is the average annual percentage increase in population? - Compound interest
Calculate the time it takes for a bank deposit earning 2.6% p.a. interest to double. - Chestnuts
Michael has 2 times fewer chestnuts than Tonny. Together they have 312 chestnuts. How many chestnuts does each of them have? - Right triangle
The legs of a right triangle are in the ratio a:b = 2:8. The hypotenuse has a length of 87 cm. Calculate the perimeter and area of the triangle. - Golden ratio
Divide the line of length 871 cm into two sections so that the ratio of shorter to greater is the same as the ratio of the greater section to the whole length of the line. - Wind drift
A plane flies at 780 km/h airspeed. It covers a distance of 1200 km with the wind and then the same distance against the wind in a total of 3 h 5 min. What is the wind speed? - The cyclist
A cyclist travelled from a village to a town. The first half of the journey was at 24 km/h. The second half, which was mostly downhill, was at 38 km/h. The entire journey took 94 minutes. Calculate the distance from the village to the town. - Father and son
A father and son are 74 years old together. The son is 30 years younger than the father. How old is the son? - Quiz
The tested student answered correctly on a 3/6 question. The wrong answer was 16. How many questions were answered? - Barrel with liquid
Barrel with obilím weight 123 kg. When it sheds 56% of obilia, ha weight 74 kg, what is the weight of an empty barrel? - Sumo competition
In a heaviest-man competition there were 5 competitors. The top three together weighed 369 kg. What is the minimum possible weight of the winner, given that contestants' weights are measured to the nearest kilogram? - Tractors
Two tractors with different capacities are to plough a field. The first tractor can plough the entire field in 14 hours. The second tractor can plough the entire field 8 hours déle. How long does it take both tractors to plough the entire field working to - Rectangle Anton
The difference between the length and width of a rectangle is 3. The length is 2 times greater than the width. Calculate the dimensions of the rectangle. - Radioactivity
After 113 hours decreases, the activity of a radioactive substance to 1/6 of the initial value. What is the half-life of the substance? - Exponential equation
Solve exponential equation (in real numbers): 23x-6=9 - Tangents
From point R, two tangents are drawn to a circle with a radius of 41 cm. The distance between the two points of tangency is 16 cm. Calculate the distance from point R to the centre of the circle. - 2nd class combinations
From how many elements can you create 2346 combinations of the second class? - 2nd class variations
From how many elements can you create 5112 variations of the second class?
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