Answers

2015-06-09T19:02:57+05:30
Because speed of the train is a variable and a variable cannot be  a constant but can be a variable so u find it yourself.....
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2015-06-09T19:03:47+05:30
Let speed of train be x km/hr

So, 360/x - 360/(x+5) = 1
or, x2 + 5x - 1800 = 0
On solving x,

x = 40

So, speed of train = 40 km/hr
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