A train overtakes 2 persons walking at 3 km/hr and 5 km/hr respectively in the same direction and completely passes them in 8 seconds and 10 seconds respectively. Find the speed of the train.

• Assume the length of the train as D
  x be the speed of the train
  
  then.,
  D/8=x-3
  and
  D/10= x-5
  
  solving this
  8x-24 =10x-50
  2x=26
  x=13
  ie.,speed of the train is 13km/hr
• 12 years agoHelpfull: Yes(29) No(6)
• 13km/hr
  l=8(x-3),l/(x-5)=10
  x=speedof train
• 12 years agoHelpfull: Yes(15) No(3)
• length of train remains same.
  we use relative speed
  (x-3)*8=(x-5)*10
  8x-24=10x-50
  2x=26
  x=13km/hr ....... speed of train
  
• 12 years agoHelpfull: Yes(9) No(1)
• Let length of the train assume to be same.
  Relative speed between 1 person and train= x-3
  Relative speed between 2 person and train= x-5
  Now
  8(x-3)= 10(x-5)
  By solving
  x=13Km/hr
• 10 years agoHelpfull: Yes(3) No(0)
• speed=distance/time
  relative spped=s1-s2(same direction)
  distance is same
  (s1-3)*2/60 = (s1-5)*10/60
  4s1-12 = 5s1-25
  speed of train,s1 = 13kmph
• 7 years agoHelpfull: Yes(0) No(1)