Question

A train travelling 360 km with a certain speed. If the speed is increased by 5 km per hour it takes 1 hour less to travel the same distance. Find the speed of the train,

Answer 1

Step-by-step explanation:

360÷x - 360÷x+5 = 1

360(x+5) -360(x)÷x(x+5)=1

1800÷x^2+5x=1

1800 = x^2+ 5x

x^2+5x-1800=0

x=45

speed of the train is 45 km per hour