fast train takes 3hrs less than slow train for 600km speed of slow train10km/hr less than fast trai

Asked by  | 23rd May, 2009, 12:21: PM

Expert Answer:

Let speed of fast train be x.

Speed of slow train= x-10.

As per question:

600/x = 600/(x-10)  -3

600(1/(x -10)- 1/x)=3

x(x-10)=2000

x2-10x-2000=0

Hence x=50

Speeds of train are 50 km/h and 40 km/h.

 

Answered by  | 23rd May, 2009, 03:38: PM

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