Equations practice problems - page 87 of 237
Number of problems found: 4721
- Beginning 34991
At the beginning of the year, the company had CZK 5,000,000 in its account. He has the money saved at a 16% interest rate. How much was the interest for the first year? How much was the interest for the second year? - To the cinema 2
A cinema ticket costs 150 CZK for children and 200 CZK for adults. 100 tickets were sold for the film screening and the cashier collected 16,000 CZK. Calculate: a. How many children's tickets were sold? b. How much CZK was collected for the adult ticket? - Students 34961
Pupils paid 6 b for a total of CZK 1,000 for a school trip. They paid a total of CZK 230 for the train and another CZK 35 for lunch. How many students were on the trip? - The same
The same number of rabbits and hens are running on the farm. 468 feet run around the yard. How many rabbits and hens do they have on the farm? - Fertilizer 34851
Urea contains 45% nitrogen. How much fertilizer will be needed per 1 hectare if you supply 30 kg of pure nitrogen? - 15% of
15% of the revenue from sales was CZK 24,000, and it had to be written off as sales tax. What was the net profit on sales? - Customers 34681
In January, mobile phone owners sent 1,500,000 SMS, which accounted for 75% of all January SMS. How many SMS did customers send in January?
- Broadcasted 34671
On TV, the festival broadcast 5 Belgian films and 3 Dutch films; the remaining 33.3% were from Luxembourg. Thus, the festival broadcast a total of 5 movies. - RC time constant
You introduced 1 Coulomb worth of electrons into the inner volume of a dielectric material with ϵr=6. Thirty minutes later, you found that only 36.79% of the electrons were in the internal volume. Determine the conductivity σ of the dielectric material. - Three groups
The company's employees are divided into three groups. The average salary of the first group, which includes 12% of the company's total number of employees, is CZK 40,000; in the second group, CZK 35,000; and in the third group, CZK 25,000. The average sa - Evaluation 34581
There are a total of 26 students in the class. During the evaluation of the control work, the teacher said: "4 pupils got the number one, and that is 16%. "Did all the students write the control work? - Two shops
In two different shops, the same skis had the same price. However, they first became more expensive by 20% and then cheaper by 5%. In the second, they were first cheaper by 5% and then more expensive by 30%, so after these adjustments in the second store, - 14 years
Karl is 14 years old, and Mom is 44. In how many years will MomMom be four times older? - A 36
A 36 g sample of the substance contains 91% water. After drying, the weight of the sample was reduced to 18 g. What percentage of water is now in the sample? - Double-track line
A 160 m long passenger train runs on a double-track line in one direction at a constant speed of 54 km/h, and a 240 m long express train in the opposite direction. a) How fast is the express train if passing the passenger train driver for 6 s? b) How long
- Dance ensembles
Four dance ensembles were dancing at the festival. None had less than ten and more than 20 members. All dancers from some of the two ensembles were represented in each dance. First, 31 participants were on the stage, then 32, 34, 35, 37, and 38. How many - The product of the roots
Find the product and the sum of the roots of x² + 3x - 9 = 0 - Pagans
Jano and Michael ate pagans. Jano ate three more than Michael. The product of their counts (numbers) is 180. How many pagans did each of them eat? - Rectangles - integers
How many different rectangles with integer side lengths have an area S = 60 cm²? - Staircase
On a staircase 3.6 meters high, the number of steps would increase by three if the height of one step decreased by 4 cm. How high are the stairs?
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