Question

a levels 360 kilometers at the uniform levels 360 kilometers at the uniforms gravity 60 kilometers at the uniform speed is the speed have a fight kilometers per our mall it would have taken one or less for the scene journey find the speed of the train​

Answer 1

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Answer 2

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.

Given distance=360 km.

Let the speed of the train be x km/hr.

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

x

360

−

(x+5)

360

=1

x(x+5)

[360x+1800−360x]

=1

x

2

+5x−1800=0

x

2

+45x−40x−1800=0

x(x+45)−40(x+45)=0

(x−40)(x+45)=0

x=40,−45

The speed of the train is 40 km/hr.