List of top Arithmetic and Mental Ability Questions on Speed, Time and Distance

A truck covers a distance of 368 km at a certain speed in 8 hours. How much time would a car take at an average speed which is 18 km/h more than that of the truck to cover a distance which is 16 km more than that traveled by the truck?
Two cities A and B are 360 km apart. A car goes from A to B with a speed of 40 km/h and returns to A with a speed of 60 km/h. What is the average speed of the car?