In order to find which train is faster, let's calculate each one speed by dividing the distance traveled by the amount of time.
So for train 1 we have:
[tex]V_1=\frac{240}{3}=80\text{ mph}[/tex]For train 2 we have:
[tex]V_2=\frac{490}{7}=70\text{ mph}[/tex]The speed of train 1 is higher, so it is faster than train 2, therefore the correct option is the second one (Train 1).
