Miss competition

How many girls took part in the Miss School competition if the nines grade made up half of the contestants, two-thirds of the remaining girls were eighth grade, and the seventh grade were three?

Correct answer:

n =  18

Step-by-step explanation:




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






avatar




Tips to related online calculators
Need help to calculate sum, simplify or multiply fractions? Try our fraction calculator.
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:

  • Contestants
    avg In the competition it was possible to get 0-5 points. In fact, 5 contestants of the 15 best contestants has earned 5 points or 4 points (which have won 10 contestants). The number of contestants who earned 3 points was the same as the number of contestant
  • Half of halves
    sequence_geo Half of the square we cut off, then half of the rest, etc. Five cuts we made in this way. What part of the content of the original square is the content of the cut part?
  • Girls
    playground The children's competition was attended by 63 girls, which is 30% of all children's participants. How many children attended this competition?
  • Two numbers
    fractal The sum of the two numbers is 1. Find both numbers if you know that half of the first is equal to one seventh of the second number.
  • TV competition
    test In the competition, 10 contestants answer five questions, one question per round. Anyone who answers correctly will receive as many points as the number of competitors answered incorrectly in that round. After the contest, one of the contestants said: We
  • Seamstress
    textiles The seamstress cut the fabric into 3 parts. The first part was the eighth fabric, the second part was three-fifths of the fabric, and the third part had a length of 66 cm. Calculate the original length of the fabric.
  • Cross-country competition
    spartakiada Cross-country competition was attended by 76% of pupils of class 9.B. Class consis of 16 boys, two of whom did not run and 4 girls did not run. How many girls go to class 9.B?
  • Two thirds
    eq222 Two thirds of the unknown number is 8/7. What is 7/3 of this number?
  • Competition
    sutaz 15 boys and 10 girls are in the class. On school competition of them is selected 6-member team composed of 4 boys and 2 girls. How many ways can we select students?
  • Class
    pytagoras_class When Pythagoras asked how many students attend the school, he said: "Half of the students studying mathematics, 1/4 music, seventh silent, and there are three girls at school." How many students had Pythagoras at school?
  • Two thirds
    fractions Find two-thirds of the number equal to two-thirds of 99
  • The buns
    buhty Kate, Zofia, and Peter Liked buns. Even today, their grandmother prepares their favorite meal. Katka eats 4 bunches, Žofia 3, and Petra eats 5 buns. Their grandmother said to them, "My inmate will you know how many buns I have been made today if those you
  • Pupils
    family There are 32 pupils in the classroom, and girls are two-thirds more than boys. a) How many percents are more girls than boys? Round the result to a whole percentage. b) How many boys are in the class? c) Find the ratio of boys and girls in the class. Writ
  • Classroom
    school One-eighth of 9th class was interested in studying at a grammar school, at a business academy one sixth, at secondary vocational schools quarter, to SOU one third and the remaining three students were interested in the school of art direction. How many st
  • The carpenters
    wood The carpenters cut the beam. Half of the cut pieces were 1 meter long, a quarter of the pieces were two meters long and the remaining 8 meters of the beam were cut into two equal parts. - What was the length of the original beam? - What part of the origin
  • Breads
    chlieb Several pieces of bread were in the store. Half of them plus half of the bread bought a cookbook. Of the remaining bread, half of it plus half of the bread was bought by Mr. Novák. Ms. Small bought the last bread. How many breads were in the store at the
  • Students
    skola If the fifth-grade class left 20% of students and in the seventh grade were added two pupils, in the eighth one pupil, the number has not changed in the ninth grade, but it is now tenth students less than it was in the fifth grade. How many pupils are in