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Q. A man covers half of his journey at 6 kilometre per hour and the remaining half at 3 kilometre per hour his average speed is

  • (A) 4.5 km/h
  • (B) 3 km/h
  • (C) 4 km/h
  • (D) 9 km/h
  • Correct Answer - Option(C)
  • Views: 7
  • Filed under category Math
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Explanation by: Admin
Find total time taken. Let total distance is 2x, hence first half distance will be covered in x/6 hours, similarly last half distance will be covered in x/3 hours. Now add both times taken. Total time taken is x/2 hours. Average speed = total distance/ total time => 2x/x/2 => 4 km/h is answer

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