Walking 6/7th of his usual speed a man is 12min too late. The usual time taken by him to over that distance is

• 1 hour 12 min
  
  Let x be the distance and s usual speed
  
  x/s = t --(1)
  
  x/6s/7 = t + 12/60
  7/6 *x/s = t + 12/60
  7/6*t = t +12/60
  1/6 *t = 12/60
  t = 12/10
  = 1 hour 12 min
  
  
• 10 years agoHelpfull: Yes(0) No(0)