Multiple choice

During a journey a man covered 50 km at a speed of 25 km/hr. He covered the remaining 70 km at a speed of 35 km/h. Find the average speed of the man ?

  1. $24 km/h$
  2. $25 km/h$
  3. $30 km/h$
  4. $32 km/h$
  5. $None of these$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Total distance = 50 + 70 = 120 km. Time for first part = 50/25 = 2 hours. Time for second part = 70/35 = 2 hours. Total time = 4 hours. Average speed = Total distance/Total time = 120/4 = 30 km/h.

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