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    3. if we add the ages of jim, his father, and grandfather. we get 137.the grandfather is 70 yrs older than jim , and jim is 31 yrs younger than his father. How old are each of these three people?
    if we add the ages of jim, his father, and grandfather. we get 137.the grandfather is 70 yrs older than jim , and jim is 31 yrs younger than his father. How old are each of these three people?

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    +2  Views: 3085 Answers: 3 Posted: 13 years ago
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      3 Answers

      J = Jim                        


      D = Jim's father            


      G = Jim's grandfather  


      __________________________________________________________


      J + (J + 70) + (J + 31) = 137


      J + J + 70 + J + 31 = 137


      3J + 101 = 137


      3J + 101 - 101 = 137 - 101


      3J = 36


      3J/3  =  36/3


      J  =  12


      D  =  12 + 31 = 43


      G  =  12 + 70 = 82


      ____________________________________________________


      J  =  12


      D  =  43


      G  =  82


      Check:   12 + 43 + 82 = 137


       


       

      13 years ago. Rating: 4
      Comment this answer

        Russrocks

        Thanks for the math! I just did it in my head because I forgot how.
        commented 13 years ago

        Grandfather  is 82, father is 43, Jim is 12.

        13 years ago. Rating: 3
        Comment this answer

          Jim + 70 = Grandpa
          Jim + 31 = Dad
          Jim

          3Jims +  101 = 137
          3 Jims = 36 (137 - 101)
          1 Jim = 36/3      
          Jim is 12
          Dad is 12 + 31 or 43
          Grandpa is 12 + 70 or 82
          12 + 43 + 82 = 137 

          13 years ago. Rating: 1
          Comment this answer



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