The time taken by train 360 m long travelling at 21 Kmph, in passing a person walking in the same direction at 3 kmph, will be:

On a journey of 300 km, a person travels the first 100 km at the speed of 40 km/hour, the next 50 km at the speed of 60 km/hour and the last 150 km at the speed of 50 km/hour. What is his average speed (in km/hour) for the entire journey?

The speed of a 90 meter long train is 45 km/h. A man is standing right next to the railway line. How much time will the train take to cross the speed increases by 20%?

Two trains of equal length are running from the same origin on parallel tracks in the same direction, at the speeds of 58 km/hr and 73 km/hr, respectively. The faster train passes the other train in 144 seconds. What is the length (in meters) of each train?

A man can row a boat at a speed of 8 km/hr. in still water. If the speed of water current is 2 km/hr. and it takes the man 2 hours to row the boat to a certain place and come back, how far is the place from the starting point?

The speed of a train is 75 km/h. The distance covered by the train in 6 seconds is :

A bus passes two persons moving in the direction of the moving bus at a speed of 3 km/hr and 5 km/hr, respectively. The bus passes the first person in 10 s and the second person in 11 s. Find the speed of the bus.