A and B run in opposite directions from a pt. P on a circle with different but constant
speeds. A runs in clockwise direction. They meet for the first time at a distance of 900 m
in clockwise direction from P and for the second time at a distance of 800 m in
anticlockwise direction from P. If B is yet to complete one round, the circumference of
the circle is?

•  Let x be circumference
  A:900m B: x-900m
  Again
  A: 2x-1700 B: 1700-x
  
  So,
  900/x-900 = 2x-1700/1700-x
  
  1530000 - 900x =2x^2 - 1700x - 1800x + 1530000
  2x^2 -2600x = 0
  x = 1300m
• 7 years agoHelpfull: Yes(0) No(16)