A bus covers a distance of 250 km from Delhi to Jaipur towards West in 5 hours in the morning and returns to Delhi in the evening covering the same distance of 250 km in the same time of 5 hours. Find (a) average speed, and (b) average velocity, of the bus for the whole journey.

Explanation

`"Average speed"=("Total distance travelled")/("Total time taken")=(250 km +250 km)/(5h+5h)=(500 km)/(10 h)=50 km h^(-1)` Thus, the average speed of the bus for the whole journey (both ways) is 50 kilometres per hour.