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Math Help - precentage

  1. #1
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    Question precentage

    360 students: freshman,sophomores,juniors and seniors,attended a basketball game at a college.50% of these were freshman and 30% of the students were sophomores.the number of junior was one half the number of sophomores.what percent of students were senior?

    choice: a) 20% b)5% c)10% d) 18%
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  2. #2
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    Quote Originally Posted by BeBeMala View Post
    360 students: freshman,sophomores,juniors and seniors,attended a basketball game at a college.50% of these were freshman and 30% of the students were sophomores.the number of junior was one half the number of sophomores.what percent of students were senior?

    choice: a) 20% b)5% c)10% d) 18%
    using the above data

    freshman =.50(360)=180
    sophomores = .30(360)=108
    junior=.5(108)=54

    senior=360-54-108-180=18

    \frac{18}{360}=\frac{1}{20}=.05=5\%
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