Two dogs are standing 960 m apart from each other. The first dog runs at a speed of 9 m/s and the second runs at a speed of 7 m/s. If two dogs run towards each other, after how much time will they bump into each other?

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 ?

During a journey of 200 Km, the average speed of a car is 125 km/h. But if for the first 100 km, the driver increases its earlier average speed by 20% and then decreases it to its (2/3)rd for next 100 km. What will be the new average speed?

A train travels 92.5 km/hr. How many meters will it travel in 18 minutes?

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 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?

A man sitting on a train which is traveling at 50 km/hr observes that a goods train, traveling in the opposite direction, takes 9 seconds to pass him. If the goods train is 280 meter long, find its speed?