Question

A train travels 360km at a uniform speed. If the speed had been 5 km/h more , then it would have taken 1h less for the same journey. Find the speed of the train.​

Answer 1

Answer:

Given distance =360 km

Let the speed of the time be x km/hr

Speed when increased by 5 km/hr (x+5)

360/x - 360/(x+5) =1

[360x +1800- 360x]

----------------------------- = 1

x(x+5)

2

X + 5x-1800 =0

2

X + 45x-40x-1800 = 0

x(x+45)-40 (x+45) = 0

(x-40) (X+45) =0

x=40,-45

Then The speed of the time is 40 km/hr

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