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    sri340's Avatar
    sri340 Posts: 5, Reputation: 1
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    #1

    Oct 5, 2009, 12:32 PM
    Mean weight math
    The mean weight of Jebs pumpkin and Karls pumpkin is 120 pounds. The mean weight of Karls pumpkin and Dougs pumpkin is 140 pounds. The mean weight of Jebs pumpkin and
    Dougs pumpkin is 135 pounds. Combined, how many pounds do all three pumpkins weigh?
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Oct 5, 2009, 01:12 PM

    If you write out the formulas for each of these three statements, you'll see that all you need do is add them up! For example: "The mean weight of Jeb's pumpkin and Karl's pumpkin is 120 pounds" can be written out as:

    (J+K)/2 = 120

    Continue with the other two statements, and see if you can take it from there.
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
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    #3

    Oct 5, 2009, 02:10 PM
    Quote Originally Posted by sri340 View Post
    The mean weight of Jebs pumpkin and Karls pumpkin is 120 pounds. The mean weight of Karls pumpkin and Dougs pumpkin is 140 pounds. The mean weight of Jebs pumpkin and
    Dougs pumpkin is 135 pounds. Combined, how many pounds do all three pumpkins weigh?
    Yep. EBaines is dead on. Think of it this way

    J = weight of Jeb's pumpkin
    K = weight of Karl's pumpkin
    D = weight of Doub's pumpkin



    Generate two additional equations for the other two

    Add the three equations together and simplify
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