Math-please help!!

Half the students in Max's class volunteer at the local community center. 15 students do not volunteer.if there are 12 boys in Max's class , how many girls are in Max's class? I am having a brain freeze!

asked by Anonymous
  1. let the number of girls be x
    total in class = x+12
    number of students who do not volunteer
    = (x+12)/2
    but this is 15

    (x+12)/2 = 15
    x+12 = 30
    x = 18

    So there are 18 girls in the class.

    posted by Reiny
  2. this was really helpfull thx

    posted by MAAAAATHHH :(
  3. ..............

    posted by WHY
  4. Thanks! This really helped me a lot! :)

    posted by Thank you!
  5. This is easy like the Cleveland browns

    posted by LeBron
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  7. I worked it out.

    1/2(x+12)= 15
    Then, divide 1/2(x+12) by 1/2 and the 15 by 1/2
    x+12= 30
    (x+12)-12 30 -12
    x= 18

    posted by Unicorn

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