a train is travelling at speec of 50 km/hrs on return journey it travel at 50 km/hrs and takes 4 hour more what is distance
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let distance be x
time be y
speed=distance/time
50xy=x/y
50xy=x/y+4
x/y=x/y+4
x*y+4=xy
xy+4x=xy
time be y
speed=distance/time
50xy=x/y
50xy=x/y+4
x/y=x/y+4
x*y+4=xy
xy+4x=xy
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