A car travels first one third of total time with a speed 20kmph,next one third of time with a speed 40kmph and last one third of time with a speed of 60kmph.The average speed of the car for total journey is?

A car travels first one third of total time with a speed 20 kmph, next one third of time with a speed 40 kmph and last one third of time with a speed of 60 kmph. The average speed of the car for total journey is (kmph)

A car travels the first one third of a certain distant with a speed of 10 km/hr, the next one third distant with a speed of 20 km/hr and the last one third distance with a speed of 60 km/hr. The average speed of the car for the whole journey is 18 k m//h r b. 24 k m//h r c. 30 k m//h r d. 36 k m//h r

A car travels the first one-third of a certain distance with a speed of 10 km/hr, the next one-third distance with speed of 20 km/hr and the last one-third distance with a speed of 60 km/hr. The average speed of the car for the whole journey is

A car travels the first one-third of a certain distance with a speed of 10 k m//h r the next one-third distance with a speed of 20 k m//h r and the lat one-third distance with a speed of 60 k m//h r . The average speed of the car for the whole journey is 18 k m//h r b. 24 k m//h r c. 30 k m//h r d. 36 k m//h r

A car is moving on a straight road covers one third of the distance with a speed of 20 km/h and the rest with a speed of 60 km/h. The average speed of the car is

A car travels from A to B at a speed of 20 km//hr and returns at a speed of 30 km//hr . The average speed of the car for the whole journey is

A car travelled the first third of a distance (x) at a speed of 10 km//h , the second third at a speed of 20 km//h and the last third at a speed of 60 km//h . Determine the average speed of the car over the entire distance (x).

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