Can't get simpler than that
Aman is on a journey to a hill station, travelling by a car. He completes the first half of the journey at a constant speed of 40 km/hr, while the rest half at a speed of 60 km/hr.
Can you find his average speed throughout the journey?
NOTE: The frame of reference of the motion is attached to the earth.
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1 solution
average speed can be related to harmonic mean. where 2xy/x+y = ave. speed