A train of length 150 takes 20 seconds to cross a platform 450 metre long find the speed of a train in metre per second.
( use via direct and inverse variation)
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length of the train = 150
time to cross a platform =20 seconds length of platform =450m
speed?
length of train + time taken to cross platform
150+450=600
distance covered by train =600
speed distance /time
900/20=45 m/sec
poornimakumari214:
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The speed of the train is 108 km/hr
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