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A train travelling at 36 km/hr. complete...

A train travelling at 36 km/hr. completely crosses another train having half its length and travelling in the opposite direction at 54 km/hr. in 12 seconds. If it also passes a railway plat form in `1(1)/(2)` minutes, the length of the platform is:

A

560 metres

B

620 metres

C

700 metres

D

750 metres

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The correct Answer is:
C
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A train travelling at 48 kmph completely crosses another train having half its length and travelling in opposite direction at 42 kmph,in 12 seconds.It also passes a railway platform in 45 seconds.The length of the platform is 400backslash m b.450backslash m c.560backslash m d.600m

The length of a train and that of a platform are equal . If with the speed of 54 km/hr , the train crosses the platform in 1 (1)/(2) minutes , then what is the length of the platform in metres?

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