Question

A man completes 30 km of a journey at the speed of 6 km/h and the remaining 40 km of the journey in 5 hr. his average speed for the whole journey is

Answer 1

time taken to travel 30 km

t=30/6 hrs = 5 hrs

average speed = total distance covered / total time taken to cover the distance

avg. speed = 70/10 = 7 kmph