sakeena52 sakeena52

14-06-2020
Mathematics

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

Please answer the question fast

Respuesta :

mhanifa mhanifa

14-06-2020

Answer:

45 km/h

Step-by-step explanation:

Speed = x, distance= 360 km

------------

360/x= 360/(x-5)- 1
360/(x-5)-360/x= 1
360x-360(x-5)=x(x-5)
x^2-5x=360*5
x^2-5x- 1800=0
x=45 km/h

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