Which Indian cricketer is known as "Brown Bradman"?
Which "Great Fire" is believed to have started at the bakery of Thomas Farriner (or Farynor) on Pudding Lane?
Who was the last head of state of the USSR, serving from 1988 until 1991, and the only Soviet leader....................
What is the correct title for the country known as San Marino?
The Battle of Verdun and the Battle of the Somme were fought during which war?
What is maqam?
The source of what river did Scottish physician and explorer Dr David Livingstone set out to find in 1866?
What is the Caspian Sea Monster?
A type of work produced in the 14th century in Europe and later, often called faience, is characterised by what?
Which infectious disease, usually occurring in childhood, is characterised by eruptions of successive crops of vesicles?
A train is going at a speed of 60kmph towards Bangalore from Mumbai and returned back at a speed of 30kmph.
What is its average speed of train?
Answer is 40 km/h.
because for average speed we will use Harmonic mean like
average speed = (2 x 60 x 30) / (60 + 30) = (2 x 60 x 30) / (90) = 40.
If X is the distance between mumbai to banglore
then total time is T=X/60 + X/30=X/20
average speed=(total distance)/(total time taken)=2*X/(X/20)=40km/hr
A train 220 m long is running with a speed of 60 kmph. In what time will it pass a man who is running at 6 kmph in the direction opposite to that in which the train is going?
A train overtakes two persons walking along a railway track. The first one walks at 4.5 km/hr. The other one walks at 5.4 km/hr. The train needs 8.4 and 8.5 seconds respectively to overtake them.
What is the speed of the train if both the persons are walking in the same direction as the train?
A train moves past a telegraph post and a bridge 264 m long in 8 seconds and 20 seconds respectively.
What is the speed of the train?
A train 110 metres long is running with a speed of 60 kmph. In what time will it pass a man who is running at 6 kmph in the direction opposite to that in which the train is going?
A goods train runs at the speed of 72 kmph and crosses a 250 m long platform in 26 seconds. What is the length of the goods train?
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