Abdul while driving to school, computes the average speed for his trip to be 20 km `h^(-1)`. On this trip along the same route there os less traffic and average speed is 40 km `h^-(-1) . What is the average speed for Abdul's trip ?

A boy goes to market at an average speed of 29 kmh^-1 .finding the market closed he return back by same path with an average speed of 40 km h^-1 . find the average speed and velocity for complete journey.

A car travels 20 km in 1 hour and another 40 km in 3 hour. What is the average speed of the car?

A bus travels a distance of 120km with a speed of 40km/h and returns with a speed of 30km/h .Calculate the average speed for the entire journey.

A car travels a certain distance with a speed of 50 km//h and returns with a speed of 40 km//h . Calculate the average speed for the whole journey.

If a body covers a three equal distances with speeds v_1,v_2 and v_3 then what is the average speed of the body?

A train travels between two stations ambala and Amritsar. While goind from Ambala to Amritsar, it takes 3 hours and its average speed is 100km/hr. when coming back from Amritsar of Ambala, it takes 2 hours and it average speed is 150 km/hr. obtain the average speed during the whole journey?