Answer :
[tex]\begin{gathered} \text{Distance = 310 miles} \\ time\text{ = 5 hours} \\ Dis\tan ce\text{ in 1 hour=?} \\ 5\text{ hours------ 310 miles} \\ 1\text{ hour------ x} \\ x=\frac{1\text{ hour }\cdot310miles}{5\text{ hour}} \\ x=62\text{ miles} \\ She\text{ travels 62 miles in 1 hour} \end{gathered}[/tex]