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 i
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?