Two train, A and B start simultaneously towards each other from station V and W respectively, which are 138 km apart. One hour later they cross each other and keep moving with the same speed without stopping. B arrives V later than the time at which A arrives W. Which of the following can be the speed that A can assume?
Two train, A and B start simultaneously towards each other from station V and W respectively, which are 138 km apart. One hour later they cross each other and keep moving with the same speed without stopping. B arrives V later than the time at which A arrives W. Which of the following can be the speed that A can assume?
Option 1 -
75km/hr.
Option 2 -
67.5km/hr.
Option 3 -
58.5km/hr.
Option 4 -
69km/hr.
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1 Answer
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Correct Option - 1
Detailed Solution:Since the two train meet after one hour, their relative speed (sum of their speeds as they are travelling in opposite direction) is 138km/hr. The speed of faster train is asked; we know it has to be greater than 69km/hr. as B takes more time to cover the same distance.
Option (a) is correct.
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