a 320 meter long train moving with an average speed of 120km/hr crosses a platform in 24 seconds.A man crosses the same platform in 4 mins.What is the speed of man in meter/ second??
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120 * 1000 = 120000m
4 * 60 = 240 seconds.
speed = distance/time
= 120000/240
= 500m/s
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