Re: jnu 2003 doubts.plz help

Posted by Homer Simpson on May 02, 2014; 11:50am
URL: http://discussion-forum.276.s1.nabble.com/jnu-2003-doubts-plz-help-tp7588224p7588260.html

Let X,Y,Z denote camel, sheep and goat

given, Px = Xa + Xb (Sum of quantities of both owners A and B)
             = 2Xa (Xa = Xb)

  Rx (Total revenue) = Px (Xa+Xb) = 4(Xa)^2

Now given that this revenue is just sufficient for an odd number of sheep and 1 goat, along with 2<Pz<10

      4(Xa)^2 = 10Y + Pz  (clearly, Xa has to be a positive integer for this to hold)

       10Y can take values like 10, 30, 50, 70, 90...
       i need to choose some 2<Pz<10 such that RHS is a perfect square divisible by 2
       The only possible choice is Pz = 6