Suresh covers a distance by a cycle at 10 km/h. He returns to the starting point in a car at a speed of 50 km/h. Find the average speed for the entire journey.

A woman on vacation travels first 150 km at 60 km/hr and the next 150 km at 25 km/hr. The average speed for the first 200 km of the tour is:

A 110 m long train takes 3 seconds to pass a pole. How long is the platform if the train passes it in 15 seconds?

A Police officer sees a chain snatcher and runs to catch her from a distance of 50 metres. When the Police officer starts chasing the chain snatcher from a distance of 50 metres, the chain snatcher is running @ 2 metres per second. At the same time the Police Officer is chasing the chain snatcher @ 4 metres per second.

Find the distance covered by the chain snatcher when the Police Officer shall be able to successfully catch her?

A 500 metre long train is running at a speed of 90 km/hr. It will cross a 250 metre long railway bridge in :

Jyoti can row a boat at $7\frac{1}{2}$ km/h in still water. If in a river running at 1.5 km/h, she takes 50 minutes to row to a place A and come back, then how far off is the place A ?

Ananyaa travels a certain distance at a speed of 3 kmph and reaches her destination late by 15 minutes. If she travels at a speed of 4 kmph, she reaches her destination 15 minutes earlier. Find the distance that Ananyaa is traveling to reach her destination.