In covering a distance of 60 km Sheela takes 4 hours more than Reeni If Sheela doubles her speed then she would take 2 hour less than Reeni Sheelas speed in kmhr is

• ans= 5km/hr;
  60/v=4+r;
  60/2v=r-2;
  v=5km/hr;
• 9 years agoHelpfull: Yes(0) No(0)
• Let Sheelas speed be x,
  If time taken by reeni is t then time taken by sheela will be t+4,
  Applying distance formula for sheela,
  60 = x (t+4)
  Now if sheela doubles her speed i.e. 2x
  She takes 2 hours less than reeni i.e. t-2
  Applying distance formula,
  60 = 2x (t-2)
  t = 30/x + 2
  Putting value of t in previous equation,
  60 = x (30/x +2 +4)
  60 = x (30/x +6)
  60/x - 30/x = 6
  30 = 6x
  x = 5km/hr
  Sheelas speed = 5km/hr
• 3 years agoHelpfull: Yes(0) No(0)