Find the average speed of a car if it covered 120 km in 2hr.

If the average speed of a bus is 52 km/h, how much does it travel in 6 hours?

Ravi's house is 90 kilometers away from the railway station. If only he starts from the house at 8'o clock and reaches the railway station at 9.30 by car he can catch the train. At what speed should car travel?

The average speed of an aeroplane is 840 km/hr. Find the time it will take to cover 5040 km.