Question
Ballast elements
areSolution
Al and Si are ballast element that is they are present in huge amount but plants can grow without them.
Two trains A and B, were proceeding in the same direction on parallel tracks at 22 km/hr and 76 km/hr respectively. A man noticed that it took exactly 1...
Length of train 'X' is (35n - 30) metres, which is 200 metres more than that of train 'Y'. Time taken by 'X' and 'Y' to cross a pole is 20 seconds and 1...
The time taken by train A , whose length is 'd' meters to cross a bridge of 300 meters is equal to the time taken by train B of length 'd + 200' meters ...
A train travelling at the speed of 72 km/hr crosses another train, having 40 meters less length and travelling in opposite direction at the speed of 54 ...
- Two cyclists ‘X’ and ‘Y’ start from towns ‘M’ and ‘N’ respectively towards each other at the same time. When they meet after 6 hours, cycli...
Train 'C' of length 300 meters passes a pole in 10 seconds. Train 'D', traveling at triple the speed of train 'C', crosses a bridge in 12 seconds from t...
A person sees a train passing over 4 km long bridge. The length of the train is half that of bridge if the train clears the bridge in 4 mins. What is th...
Two trains of equal lengths take 20 seconds and 30 seconds respectively to cross a telegraph post. If the length of each train be 300 metres, in what ti...
A person sees a train passing over 4 km long bridge. The length of the train is half that of bridge if the train clears the bridge in 8 mins. What is th...
Find the time (in seconds) taken by a 400 metre long train which is moving at a speed of 90 km/h, to cross a 500 metre long bridge.
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