two branch of tree bird sit in way if one bird of the first branch goes to second branch there ratio become equal and if bird from second branch goes to first branch ratio become double than first. what are there ratio in sitting ?

• 7:5
  if birds on 1st branch=x, 2nd branch=y
  Ist condition, x-1=y+1, x-y=2 ---(i) &
  2nd condition, x+1=2(y-1), x-2y=-3 ---(ii)
  Solving (i) & (ii), x=7, y=5
• 10 years agoHelpfull: Yes(64) No(1)
• 7:5 is correct
  7-1=5+1
  7+1=2(5-1)
  
• 10 years agoHelpfull: Yes(2) No(0)
• consider 2 birds in one branch and 4 birds in second branch.
  1) one bird jump from branch 1 to branch 2 then the ratio is 3/3=1/1 i.e equal no of birds.
  2) again one bird jumps from branch 2 to branch 1 then their ratio will be 4/2=2/1 i.e double the ratio of second branch birds
  
  ans is 1st branch birds are 4 and second branch birds are 2 i.e x=4 and y=2
• 10 years agoHelpfull: Yes(1) No(14)
• I have small doubt if one goes and sits in another branch....
  how you guys changing x-1 to x+1 in 2nd condition...
  I guess it has to be x-1+1 in second condition...
  
  answer has to be 6:4 or 3:2
• 10 years agoHelpfull: Yes(1) No(2)
• which is correct answer
• 10 years agoHelpfull: Yes(0) No(0)
• let first brance contain birds = x
  let second brance contain birds = y
  1st : x-1=y+1
  x-y=2
  2nd : 2(y-1)=x+1
  -x+2y=3
  
  solve 1 n 2
  
  x=7
  y=5
  
• 9 years agoHelpfull: Yes(0) No(0)