What is the Average Speed of the Car for the Entire Journey? If

A motor car goes from Mumbai to Pune at a speed of 20 km/hr but returns from there at a speed of 30 km/hr. The average speed of the car for the entire journey is

  1. 26 km/hr
  2. 25 km/hr
  3. 24 km/hr
  4. 23 km/hr
Monis Rasool Professor Asked on 10th June 2015 in Maths.
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1 Answer(s)

Answer: (2) 25 km/hr.
Explanation:-
Formula-

Average speed = sum of speed /number of speeds
Speeds = 20km/h  and 30 km/h

Then, average speed = (20 + 30)/2
= 50/2 = 25 km/h.

Hence, the answer is (2) 25 km/h.

Anurag Mishra Professor Answered on 11th June 2015.
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