School year

At the end of the school year has awarded 20% of the 250 children who attend school. Award got 18% boys and 23% of girls. Find how many boys and how many girls attend school.

Correct answer:

x =  150
y =  100

Step-by-step explanation:


x+y = 250
0.18x+0.23y = 0.2•250

x+y = 250
0.18•x+0.23•y = 0.2•250

x+y = 250
0.18x+0.23y = 50

x = 150
y = 100

Our linear equations calculator calculates it.



Did you find an error or inaccuracy? Feel free to write us. Thank you!



avatar







Tips to related online calculators
Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation?

You need to know the following knowledge to solve this word math problem:

Related math problems and questions:

  • Unions now
    roh The plant has 1,250 employees. The Trade Unions (former ROH, OH) is 18% male, 23% female. Plant management reported that in the trade union is 20% of all employees. How many men and women are in the plant, and how many are men and women in trade unions?
  • Brunette
    brown_eye Of the girls who attend primary school are 30% blondes and 70% brunette. 81% blondes and 19% brunette has blue eyes. How many girls attending school altogether if 470 girls has blue eyes?
  • Ski class
    ski Class attend 30 boys and some number of girls. Ski training was attended by 28 boys and all the girls, which was 95% of all students. How many girls attend this class? How many percent is that?
  • Salary
    500euro Lawyer got to pay 840 Euros in banknotes of 20 and 50 Eur. Total got 18 banknotes. How many was which?
  • Crowns
    money 1180 crowns are divided into three people: A got 20% less than B and C by 15% more than B. How many got A, B, and C?
  • School
    662536762 School attend 792 children, boys and girls ratio is 4:5. How many more girls go to school (than boys)?
  • 3 years
    ekonomicky-rast The company has increased the number of employees. In year 2005 compared to 2004 13% more, in 2006 18% more against the previous year, in year 2007 20% more compared to 2006. How many % increase in the number of employees in 3 years?
  • Four numbers
    equilateral_triangle The first number is 50% second, the second number is 40% third, the third number is 20% of the fourth. The sum is 396. What are the numbers?
  • Energy saving
    energy_star They were released three different, independent inventions saving 20%, 24% and 15% energy. Some considered that while the use of these inventions, the total savings will be 20% + 24% + 15% = 59%. Is this true? How much will percent of energy save all thre
  • Acid solution
    h2so4 By adding 250 grams of a 96% sulfuric acid solution to its 3% solution, we changed its initial concentration to 25%. How many grams of 3% of the acid was used for dilution?
  • Geography tests
    test On three 150-point geography tests, you earned grades of 88%, 94%, and 90%. The final test is worth 250 points. What percent do you need on the final to earn 93% of the total points on all tests?
  • Cinema tickets
    listky Cinema sold 180 tickets this Thursday, which is 20%. Monday 14%, Tuesday 6%, Wednesday 9%, Friday 24%, Saturday 12%, and Sunday 15%. How many tickets were sold per week?
  • Pupils
    skola There are 350 girls in the school, and the other 30% of the total number of pupils are boys. How many pupils does the school have?
  • Diofant equation
    eq222 250x + 120y = 5640
  • Percents from percent
    percent How much is 13% of 20% of 500 greater than 8% of 14% of 200?
  • Influenza
    flu For the first week of February by influenza 5% of children in kindergarten. The second week ill 9 next children, bringing the number of patients increased to 20%. How many children went to the kindergarten?
  • Average mark
    flag_english Calculate average mark in English, if a student got a couple of 3's, 20% less 2 than 3, and 50% more 1's than the 2's.