Jagan went to another town covering 240 km by car moving at 60 kmph. Then he covered 400km by
train moving at 100 kmph and then rest 200 km he covered by a bus moving at 50 kmph. The average
speed during the whole journey was:

• By car 240 km at 60 kmph
  time taken = 240/60 = 4 hr.
  
  By train 240 km at 60 kmph
  time taken = 400/100 = 4 hr.
  
  By bus 240 km at 60 kmph
  time taken = 200/50 = 4 hr.
  
  so total time = 4+4+4 = 12 hr.
  and total speed = 240+400+200 = 840 km
  total speed = 840/12 = 70 kmph(Answer)
• 11 years agoHelpfull: Yes(19) No(0)
• average speed=total distance/total time;
  average speed=(240+400+200)/(240/60+400/100+200/50);
  average speed=840/12;
  average speed=70;
• 7 years agoHelpfull: Yes(1) No(0)
• average speed=total distance/total time;
  average speed=(240+400+200)/(240/60+400/100+200/50);
  average speed=840/12;
  average speed=70;
• 7 years agoHelpfull: Yes(1) No(0)