[tex]\begin{gathered} \text{speed}=\frac{dis\tan ce}{\text{time }} \\ dis\tan ce=3\frac{1}{4}=\frac{13}{4} \\ \text{time}=\frac{1}{4} \\ \text{speed}=\frac{\frac{13}{4}}{\frac{1}{4}} \\ \text{speed}=\frac{13}{4}\times\frac{4}{1} \\ \text{speed}=13milesperhr^{} \end{gathered}[/tex]
