If the first one - third of q journey is travelled at 20 km `h^(-1)` , Next one - third at `40 km h^(-1)` And the last one third at `60 km h^(-1)` then the average speed for the whole journey will be

A bus travelling the first one third distance at a speed of 10 km/h, the next one third at 20 km/h and the last one third at 60 km/h. The average speed (in km /h) of the bus is

One-fourth of a certain journey is covered at the rate of 25 km/h, one-third at the rate of 30 km/h and the rest at 50 km/h. Find the average speed for the whole journey.

A bus travelled the first one-third distance at a speed of 10 km//h , the next one-third at 20 km//h and the last one-third at 60 km//h . The average speed of the bus is

A bus travelled the first one-third distance at a speed of 10 km//h , the next one-third at 20 km//h and the last one-third at 60 km//h . The average speed of the bus is

One-third of a certain journey was covered at the speed of 20km/hr ,one - fourth at 30km/hr and the rest at the speed of 50km/hr .find the average speed peer hour for the whole journey.

In a journey, the first one - third of the distance is covered at a speed of 20km/hr, the second 1/3 at speed of 30 km/hrand the last 1/3 at a speed of 24 km/hr. The average speed in km/hr for the whole journey is

A person covers half of his journey at 40km/h, one-third at 60 km/h and rest of journey at 30 km/h. Find his average speed for the whole journey.

A person covers half of his journey at 30km/h,one-third at 40km/h and rest of his iourney at 20 km/h. Find his average speed for the whole iourney.