A man standing on a 170 metre long platform watches that a train takes – McqOptions

MCQOPTIONS

1.

A man standing on a 170 metre long platform watches that a train takes
7 1 seconds to pass him and 21 seconds to cross
2
the platform. Find the speed of train.

A.

12.5 m/sec.

B.

None of these

Answer» B. None of these

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