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Acid rain is caused by the presence of oxides of nitrogen and sulfur in the atmosphere, which form acids when they react with water.
A car is pursuing a bike that is 220 km away. The bike travels at a speed of 15 km/hr, while the car travels at three times the speed of the bike. How l...
A train has to cover a distance of 120 km in 10 hours. If it covers half journey in 3/5th time, then the speed of covering the remaining dist...
A person travels from point A to point B at a speed of 60 km/h and returns to point A at a speed of 80 km/h. He spends 2 hours less on the return journe...
A boy is traveling to a destination. If he moves at a speed of 20 meters per second, he arrives 20 seconds late. Conversely, if his speed is 40 meters p...
If the speed of Train A is six times to that of Train B and takes 15 hours less than Train A. Find the speed of Train B if the distance travelled by the...
Ajay and Vishal left the place ‘X’ with different speeds which are in the ratio 4:3 respectively. Ajay left the place 36 seconds after Vishal. If af...
A cyclist travelled for the first 100 km at a certain speed in 4 hours. After that, the speed of the cyclist decreased by 3 km/h. If the cyclist took a ...
A goods train and a passenger trains are running on parallel tracks in the same direction.The driver of the goods train observes that the passenger tra...
A train crosses a pole in 12 sec, and a bridge of length 170 m in 36 sec. Then the speed of the train is:
A person crosses a 1600 m long street in 4 min. What is his speed (in km/h)?