Between two points, a car accelerates uniformly at first, then moves with constant speed and finally retards uniformly to rest. If the ratio of time takes is `1:4:2` and the maximum speed is `70 km//h`, find the average speed over the whole journey.

Between two stations a train accelerates uniformly at first, then moves with constant velocity and finally retards uniformly. If the ratio of the time taken for these is 1:8:1 and the maximum speed attained be 60 km h- then what is the average speed over the whole journey ?

Between two stations a train starting from rest first accelerates uniformly, then moves with constant velocity and finally retarts uniformly to come to rest. If the ratio of the time taken be 1 : 8 : 1 and the maximum speed attained be 60 km//h , then what is the average speed over the whole journey ?

Between two stations a train starting from rest first accelerates uniformly, then moves with constant velocity and finally retarts uniformly to come to rest. If the ratio of the time taken be 1 : 8 : 1 and the maximum speed attained be 60 km//h , then what is the average speed over the whole journey ?

A car travels 100 km at a speed of 60 km/h and returns with a speed of 40 km/h. Calculate the average speed for the whole journey.

A car covers a distance of 80 km at a speed of 60 km/hr and another 140 km at a speed of 70 km/hr Find the average speed of the 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.

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.

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.

Shantanu covers a certain distance by car driving at 35 km/h and he returns back to the starting point riding on a scooter with a speed of 25 km/h. Find the average speed for the whole journey.