Q. There are 99 birds on the roof.
suddenly all birds fly away.
some birds fly to east.
birds fly to west is twice of that of east.
birds fly to north is twice of that of west.
Birds flies to south is same as in north.
Find the no. of birds fly in all diections.

• east= x
  west= 2x
  north= 4x
  south=4x
  x+2x+4x+4x=99
  11x=99
  x=9
  east= 9
  west= 18
  north = south=36
• 11 years agoHelpfull: Yes(5) No(0)
• E= East, W= West, N= North, S= South
  Total birds= 99
  Birds fly in E+W+N+S= 99
  therefore,
  E+2E+4E+4E=99; we get E= 9
  hence, west side= 2*(east) = 18
  North = south = 4*(East) = 36
  N=36, S= 36, W=18, E= 9
• 11 years agoHelpfull: Yes(2) No(0)
• ANS IS IN QUESTION ITSELF BUT IF IT IS ASKED TO FIND NO OF BIRDS IN THE PARTICULAR DIRECTION THEN THE BELOW METHODS ARE USED
• 10 years agoHelpfull: Yes(2) No(0)
• east dir = x
  west dir = 2x
  north and south have 4x
  x + 4x +4x +2x =11x
  x=9
  east - 9
  west = 18
  nourh and south have 36 and 36
• 10 years agoHelpfull: Yes(1) No(0)
• 99 ofcourse bcz all fly
• 11 years agoHelpfull: Yes(0) No(0)
• 9 in east direction
  18 in west
  36 in north
  remaining 36 in north direction..
• 11 years agoHelpfull: Yes(0) No(0)