. Tarun travels a distance of 24km at 6 km/hr another distance of 24km at 8 km/hr and a third distance of 24 km at 12 km/hr. His average speed for the whole journey

• Total distance travelled = 24 + 24 + 24 = 72
  
  Total time taken = 24/6 + 24/8 + 24/12 = 9
  
  Average Speed = 72/9 = 8 km/hr
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