Question
A man in a train notices that he can count 21 telephone posts in one
minute. If they are known to be 50 metres apart, then at what speed is
the train travelling?
A man in a train notices that he can count 21 telephone posts in one
minute. If they are known to be 50 metres apart, then at what speed is
the train travelling?
Answer: Option C
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Number of gaps between 21 telephone posts=20.
Distance travelled in 1 minute=(50 x 20)m
=1000m
=1 km.
Speed of the train travelling is=60 km/hr.
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