Thursday, April 30, 2015

POTW #29 - Baseball!

4 comments:

  1. Good job on the previous question Leo, Dan, and Leon D. See me please.

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  2. I created an algebraic equation to solve this question and find out the students that were there which will make it easy to find the students absent.
    Let b be a baseball fan
    Let n be a non-baseball fan
    Let t be the total
    Let x be a number from 4 to 7
    3/4=b/t
    1/4=n/t
    t=4x
    Now we also know that the total number of students that were there that Morning is a multiple of 4 but over 15 and 28 or under. Therefore the total students can be 16, 20, 24, or 28. I complicated each fraction
    16: 12/16 baseball fans and 4/16 non-baseball fans, 9 baseball fans absent and 5 non-baseball fans absent
    20: 15/20 baseball fans and 5/20 non-baseball fans, 6 baseball fans absent and 4 non-baseball fans absent
    24: 18/24 baseball fans and 6/24 non-baseball fans, 3 baseball fans absent and 3 non-baseball fans absent
    28: 21/28 baseball fans and 7/28 non-baseball fans, 0 baseball fans absent and 2 non-baseball fans absent Although, this is not possible because there has to be at least 1 baseball fan absent.
    There isn't enough information to determine the number of students absent because there is more than 1 possibility with the given information. Finally, the possibilities for the number of students absent are: 14, 10 and 6

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  3. As more than half of the classmates had attended school that day, the total amount of students must be over 15 (30 / 2).

    The maximum number of students would be 28, as at least one baseball fan and one non-baseball fan were absent.

    The amount of baseball fans who attended school that day would have to be a multiple of four, since the question stated that 3/4 of the attendant class were baseball fans.

    The options for the amount of baseball fans would be 12 and 24.

    To find the amount of non-baseball fans corresponding with the amount of baseball fans, I would simply divide the amount of baseball fans by 4:

    12 baseball fans - 4 non-baseball fans - 16 students total
    24 baseball fans - 8 non-baseball fans - 32 students total

    Only the first option is possible as 32 is larger than 28.

    To verify:

    16 is over 15, half of Mr. Fann's class.
    12 is 3/4 of 16.
    9 baseball fans were absent and 5 non-baseball fans were absent, leaving 14 absent students total.

    14 of Mr. Fann's students were absent that day.

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