Question

A motorcyclist drives from place a to b with uniform speed of 30 km per hour and return from place B to a with a uniform speed of 20 km per hour find his average speed

Answer 1

Explanation:

If a person goes from one place to another place at a speed of X and comes back along the same route at a speed of Y then average speed is :2xy/x+y

• (2*30*20)/(30+20)
• (2*30*20)/50
• after simplification
• 2*6*2
• 24 km/hr is the average speed