Any help would be greatly appreciated :~) A train covered 120mi at a certain speed. had the train been able to trvel 10mph faster, the trip would have been 2 hours shorter how fast did the train go? Solve using an equation.
Follow Math Help Forum on Facebook and Google+
Normally, the train travels $\displaystyle rt=120$....[1] But, given the condtions of 10 mph faster and 2 hours shorter: $\displaystyle (r+10)(t-2)=120$....[2] Solve [1] for r or t and sub into [2]. Solve away.
View Tag Cloud