The ratio between the speeds of two train is 2 : 5. If the first train runs 350 km in 5 hours, then the difference between the speeds (in kmph) of both the trains is:

A and B are two points in a river. Point X and Y divide the line AB in three equal parts. Let the flow of the river is from A to B. The ratio of the time taken to row from point A to Y and from B to Y is 3 : 4. Find the ratio of the speed of the boat upstream to the flow of the river.

Two cyclists, k kilometers apart, and starting at the same time, would be together in r hours if they traveled in the same directions, but would pass each other in t hours if they travelled in opposite directions. The ratio of the speed of the faster cyclist to that of the slower is:

A train travels 72.5 km/hr. How many meters will it travel in 18 minutes?

Walking at a speed of 5 km per hour, a man covers a certain distance in 3 hours. If he covers the same distance once by car at a speed of 30 km per hour and once by cycle at a speed of 15 km per hour, what will be the time taken by him?

A train passes a 200 m long platform in 40 seconds and a man standing on the platform in 25 seconds. The speed of the train (km/hr) is:

A train crosses a pole in 12 second and a bridge of length 170 meter in 36 second. Then the speed of the train is?