To travel 600 km, train X takes 8 hours more than train Y. If however, the speed of train X is doubled, it takes 2 hours less than train Y. The speed of train Y (in km/hr) is :
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Step-by-step explanation:
Train x has x kmph speed and y has ykmph
600/x-600/y=8
Now train has 2x speed and y has same speed
600/y-600/2x=2
Solve this two equation and we got y=50 kmph
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