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In the quadratic problem: A train travels 300km at a uniform speed. If the speed had been 5km an hour more, the journey would have taken 2 hours less. Find the speed of the train?

Here the equation is set as 300/x - 300/x+5 = 2

what I would like to know is why I cant set the equation as 300/x+5 - 300/x = 2?

Is there any way to understand this rule?

2
by Rich22

can u explain how the equation 300/x-300/x+5 +2 comes?

The question is to solve for x and for this the equation is set as stated above.

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