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Math Help - Word problem - Can anybody give me a hand?

  1. #1
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    Word problem - Can anybody give me a hand?

    50 students attend school. School has two popular classes: cooking and oil painting. Enrollment in the cooking class is 38 students, and enrollment into oil painting class is 34. If there are 6 students who take neither, how many students take both?
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  2. #2
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    There are a total of 50 students and only 6 of them do not take either class. That leaves 50- 6= 44 students who take one or both of those classes.

    We are told that there are 38 students in the cooking class and 34 in the painting class. My goodness, 38+ 34= 72 which is larger than 44! How do you suppose that could happen?
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  3. #3
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    I am thinking that 28 students attend both.... 72-44=28
    10 attend paining class and 6 attend cooking only...
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    You mean 10 attend cooking and 6 attend painting class only
    Last edited by running-gag; July 17th 2010 at 12:27 PM. Reason: Typo
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  5. #5
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    Yes. Thanks for pointing this out.
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  6. #6
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    students that doesnt take cooking class = 50 - 38 = 12

    students that doesnt take oil painting class = 50 - 34 =16

    students that doesnt take both = 6

    therefore ,the stdent that take both = 50 - 6 - 16 - 12 = 16

    you can check by adding all of the students = 16 + 12 + 6+ 16 = 50
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  7. #7
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    Quote Originally Posted by Zharif93 View Post
    students that doesnt take cooking class = 50 - 38 = 12
    students that doesnt take oil painting class = 50 - 34 =16
    students that doesnt take both = 6
    therefore ,the stdent that take both = 50 - 6 - 16 - 12 = 16
    you can check by adding all of the students = 16 + 12 + 6+ 16 = 50
    Sorry, but that doesn't work. The "students that don't take cooking" includes those "students who don't take either"- you cannot add them separately. If there were 16 students taking both classes then there would be 38- 16= 22 students taking cooking only and 34- 16= 18 students taking painting only. That would give a total of 22+ 18+ 16+ 6= 62 students which is impossible.

    There are 28 students who take both, as Angie80 said, so 38- 28= 10 students who take cooking only and 34- 28= 6 students who take painting only.

    That gives a total of 10+ 6+ 28+ 6= 50 students.
    Last edited by mr fantastic; July 18th 2010 at 04:35 AM. Reason: Added quote.
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    learning how to do Venn diagrams will serve you well ...

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