Question

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

Answer 1

Answer:

40kmph

Step-by-step explanation:

let the speed of train be x and t be the time for travel

distance =360

speed = distance / time

x= 360/t

t= 360/x

if speed is x + 5 the time becomes t-1

x + 5 = 360/( t-1)

but t = 360/ x

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

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

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

360x - x^2 + 1800 -5x = 360x

x^2 + 5x -1800 = 0

solving the equation

x=40kmph

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