maths

. 30 girls and boys have planned for a picnic. There is a ratio of
3 girls to 7 boys. How many boys are there?

  1. 👍
  2. 👎
  3. 👁
  1. 70

    1. 👍
    2. 👎
  2. X boys.
    3x/7 girls.

    x + 3x/7 = 30.
    7x + 3x = 210.
    10x = 210.
    X = 21.

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. MATHS

    Two different schools (A and B) have the same number of pupils. The ratio of the boys in school A and the boys in school B is 2:1 and the ratio of the girls in school A and the girls in school B is 4:5. Find the ratio of the boys

  2. English

    Which best describes society's view of boys’ and girls’ abilities during the period in which Elizabeth Cady Stanton lived? A. The abilities of boys are equal to those of girls. B.The abilities of boys are lesser than those of

  3. math 4

    at the 6th grade school dance, there are 132 boys, 89 girls, and 14 adults. A. write a ratio of number of boys to girls. b. write the same ration using another form (A:B vs A to B) c. write the ratio of number of boys to number of

  4. math

    A class has 6 boys and 15 girls what is the ratio of boys and girls

  1. Math

    there are 16 girls and 20 boys in the school band. what is the ratio of girls to boys? Simplest form

  2. math

    hello im having problems with my math 1 Wells College in Aurora,New York was previously an all -girls college.In 2005,the college began to allow boys to enroll. By 2012, the ratio of boys to girls was 3 to 7. if there were 200

  3. algebra

    At a banquet the ratio if the number of boys to the number of girls is 5:3. Halfway tjrough the banquet 20 boys leave and the ratio bexomes 5:4. How many girls are at thebbanquet?

  4. Math

    Students surveyed boys and girls separately to determine which sport was enjoyed the most. After completing the boy survey, it was determined that for every 3 boys who enjoyed soccer, 5 boys enjoyed basketball. The girl survey had

  1. English Expression

    A: How many boys and girls are there in the park? B: There are five boys and girls in the park. --------------------- What is the meaning of B? Does it mean that there are only 5 people including boys and girls? Or does it mean

  2. math

    The ratio of boys to girls in a school choir is 4:3. There are 6 more boys than girls. If another 2 girls join the choir, what will be the new ratio of boys to girls?

  3. math

    ratio boys to girls 2:7. 250 more girls than boys. how many boys

  4. Math

    There are 12 boys and 10 girls in your gym class. If 6 boys joined the class, how many girls would need to join for the ratio of boys to girls to remain the same?

You can view more similar questions or ask a new question.