Question
Pawan Express is a 300-meter-long train which moves at
an average speed of 100 km/hr and crosses a platform in 27 seconds. A man crosses the same platform in 5 minutes. What is the speed of man in meter/second?Solution
Let the length of the platform be 'x' meters. Speed of train = 100 km/hr. = 100 * 5/18 = 250/9 meter/second 300 + x = (250/9) * 27 ⇒ x = 750 - 300 = 450m ∴ Required speed of man = 450/(5 * 60) = 1.5 meter/second
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