Question

A bus travels a distance of 120 km with a speed of 40 km per hour and returns with a speed of 30 km per hour calculate the average speed and average velocity of the journey

Answer 1

Hey mate!

Here's your answer!!

We know that,
Average speed = Total distance travelled / Total time taken

Total Distance Travelled = 120+120 = 240 km

Time taken for going
= Distance/ Speed
= 120/40
= 3 hrs

Time taken for return
= Distance/ Speed
= 120/30
= 4hrs

Thus, total time taken = 3+4 = 7 hrs

Average speed = 240 / 7 = 34.3 km/h

Hope it helps you!