Question

A boy goes from A to B with a velocity of 20 m/min and comes back from B to A with a velocity of 30 m/min. The average velocity of the boy during the whole journey is

Answer 1

Answer: 25

Explanation:

average velocity =  sum of initial and final velocity by 2

                             = $\frac{20+30 }{2}$

                             = $\frac{50}{2}$

                             = 25

Therefore the velocity of the boy during the whole journey is 25m/min