Equations practice problems - page 245 of 246
Number of problems found: 4913
- 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? - Circle arc
A circular sector has an arc length of 9.08 km and an area of 58.99 km². Calculate the radius of the circle and the size of the central angle. - Computer revolution
When we started playing with computers, the first processor, which I remember was the Intel 8080 from 1974, with the performance of 0.5 MIPS. Calculate how much percent of a year rose CPU performance when Intel 486DX from 1992 has 54 MIPS. What would - Logarithmic equation
Solve equation: log13(7x + 12) = 0 - Ladislav in Amsterdam
Larry was sent to a conference in Amsterdam as a reward. The conference fee was €1702. Calculate how many books Larry could buy at prices of 30 and 28 euros each, given that he does not want to fill his entire home library and may buy only 59 books in tot - Number ratio
Calculate two positive numbers. Its ratio is 6:18, and difference was 372. - Rectangle
The area of a rectangle is 893. Its length is 28 more than its width. What are the dimensions of the rectangle? - Salary
Operatér got to pay 2560 Euros in banknotes of 20 and 500 Eur. Total got 8 banknotes. How many were which? - Chickens and rabbits
In a farmyard there were chickens and rabbits. Together they had 30 heads and 100 legs. How many chickens and how many rabbits were in the yard? - Triangles
An equilateral triangle with a side of 16 cm has the same perimeter as an isosceles triangle with a leg of 23 cm. Calculate the base of the isosceles triangle.
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